CalCs - Calendar Complications

CalCs - Calendar Complications

Various calendar complications

开发者: Akihiro Usui

中国
APP ID 复制
6499201223
分类
价格
USD0.49
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0个评分
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昨日下载量
最近更新
2026-02-18
最早发布
2024-04-24
版本统计
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    最新版本上线距今

  • 43

    近1年版本更新次数

  • 2024-04-24

    全球最早版本上线日期

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  • 版本: 1.89

    版本更新日期

    2026-02-18

    CalCs - Calendar Complications

    CalCs - Calendar Complications

    Various calendar complications

    更新日志

    Improved the update speed of complications that display multiple events and reminders.

    视频/截图

    CalCs - Calendar Complications App 截图
    CalCs - Calendar Complications App 截图
    CalCs - Calendar Complications App 截图
    CalCs - Calendar Complications App 截图
    CalCs - Calendar Complications App 截图
    CalCs - Calendar Complications App 截图

    应用描述

    CalCs (short for "Calendar Complications") is a watchOS-only app that provides various complications related to the calendar.

    ---Important Notes---
    The features built into the main body of this app are limited to listing events/reminders & displaying a monthly calendar.
    All other features are provided through complications & the Smart Stack.

    ●If you download CalCs from the iPhone App Store, due to synchronization issues between the iPhone & Apple Watch, CalCs may not appear on the Apple Watch.
    According to Apple's specifications, watchOS-only apps cannot be re-downloaded from the App Store app on the iPhone.
    Therefore, please use the App Store app "on your Apple Watch" and follow the steps below to re-download it.
    ・Scroll to the bottom→"Account"→"Purchased"→"CalCs"→re-download
    -------------------

    Key Features
    ●Supports a variety of complications such as date display, events/reminders display, & monthly calendar display

    ・Date Display
    Displays the current date in various formats.

    ・Event/Reminder Display
    Displays events/reminders synced with your iPhone.
    You can choose whether or not to include all-day events.

    ・Monthly Calendar Display
    Displays the monthly calendar in various formats.
    You can choose to start the week on Monday.
    It also supports holidays in some areas.
    Only Modular Duo supporting models (Series 7+, not SE series) can show a month calendar using 2 large rectangles. Other models can show it in one, with smaller font.

    ●In the main app, events/reminders, & the monthly calendar are displayed
    Tapping the complication opens the app, where you can view the list of events/reminders synced with your iPhone, as well as the monthly calendar.

    *Only incomplete reminders are displayed.
    *The app currently does not have functionality to add, edit, or delete events/reminders, nor to mark reminders as complete. Please understand.

    ●Minimal Setting Options
    To avoid complicating settings on the small Apple Watch screen, the settings only allow you to select which calendar/reminder lists to display.

    *Notes
    ・The corner complications, circular complications, & large rectangular complications are supported only on Apple Watch Series 4 & later, so CalCs is not guaranteed to work on Series 3 or earlier models.

    ・Due to the limitations of watchOS complication display updates, complications may not immediately reflect changes when the date changes or after events or reminders are added or edited on the iPhone.

    ・After placing a complication for the 1st time, it may take some time for it to actually appear.

    ・If the complication is not updating, try tapping the complication to open CalCs, as this may refresh the data.

    ・If the complication is not updated even after launching CalCs, the issue may be resolved by one of the following methods. Please try them.
    1. Restart both your iPhone and Apple Watch.

    2. Force restart CalCs
    ① With CalCs open, press and hold the side button.
    ② When the screen for emergency call and power off appears, press and hold the Digital Crown.

    3. Reinstall CalCs
    ① Press the Digital Crown to display the app list.
    ② Press and hold CalCs, then tap the × button to delete it when it appears.
    ③ Launch the App Store app on your Apple Watch.
    ④ Scroll to the bottom→"Account"→"Purchased"→"CalCs"→Re-download.

    ・If the complication does not update after force quitting and restarting CalCs, try restarting both your iPhone and Apple Watch, as it may resolve the issue.

    ・If event information is not displayed on the app's main event/reminder list screen or in complications, it may be because full access to the calendar has not been granted.
    The issue may be resolved by following the steps below to re-enable full access permission to the calendar. Please give it a try.
    ①Open the "Privacy & Security" section in the iPhone Settings app & tap "Calendars".
    ②Change CalCs' calendar access to "None", then select "Add Events Only".
    ③When you open CalCs, you will be prompted to grant full access, so tap "Allow Full Access".
  • 版本: 1.88

    版本更新日期

    2026-02-16

    CalCs - Calendar Complications

    CalCs - Calendar Complications

    Various calendar complications

    更新日志

    Fixed a bug in which the number of overdue items was not updated correctly in the complication that displays reminders past their due date.

    应用描述

    暂无应用描述数据

  • 版本: 1.87

    版本更新日期

    2026-02-04

    CalCs - Calendar Complications

    CalCs - Calendar Complications

    Various calendar complications

    更新日志

    ・Fixed an issue where, in the complication that displays the next event, the display would sometimes not update even when it reached 24 hours before the event’s start time.
    ・Corrected inconsistencies in localized wording where noticed.
    ・Fixed other minor bugs.

    视频/截图

    CalCs - Calendar Complications App 截图
    CalCs - Calendar Complications App 截图
    CalCs - Calendar Complications App 截图
    CalCs - Calendar Complications App 截图
    CalCs - Calendar Complications App 截图
    CalCs - Calendar Complications App 截图

    应用描述

    CalCs (short for "Calendar Complications") is a watchOS-only app that provides various complications related to the calendar.

    ---Important Notes---
    The features built into the main body of this app are limited to listing events/reminders & displaying a monthly calendar.
    All other features are provided through complications & the Smart Stack.

    ●If you download CalCs from the iPhone App Store, due to synchronization issues between the iPhone & Apple Watch, CalCs may not appear on the Apple Watch.
    According to Apple's specifications, watchOS-only apps cannot be re-downloaded from the App Store app on the iPhone.
    Therefore, please use the App Store app "on your Apple Watch" and follow the steps below to re-download it.
    ・Scroll to the bottom→"Account"→"Purchased"→"CalCs"→re-download
    -------------------

    Key Features
    ●Supports a variety of complications such as date display, events/reminders display, & monthly calendar display

    ・Date Display
    Displays the current date in various formats.

    ・Event/Reminder Display
    Displays events/reminders synced with your iPhone.
    You can choose whether or not to include all-day events.

    ・Monthly Calendar Display
    Displays the monthly calendar in various formats.
    You can choose to start the week on Monday.
    It also supports holidays in some areas.
    Only Modular Duo supporting models (Series 7+, not SE series) can show a month calendar using 2 large rectangles. Other models can show it in one, with smaller font.

    ●In the main app, events/reminders, & the monthly calendar are displayed
    Tapping the complication opens the app, where you can view the list of events/reminders synced with your iPhone, as well as the monthly calendar.

    *Only incomplete reminders are displayed.
    *The app currently does not have functionality to add, edit, or delete events/reminders, nor to mark reminders as complete. Please understand.

    ●Minimal Setting Options
    To avoid complicating settings on the small Apple Watch screen, the settings only allow you to select which calendar/reminder lists to display.

    *Notes
    ・The corner complications, circular complications, & large rectangular complications are supported only on Apple Watch Series 4 & later, so CalCs is not guaranteed to work on Series 3 or earlier models.

    ・Due to the limitations of watchOS complication display updates, complications may not immediately reflect changes when the date changes or after events or reminders are added or edited on the iPhone.

    ・After placing a complication for the 1st time, it may take some time for it to actually appear.

    ・If the complication is not updating, try tapping the complication to open CalCs, as this may refresh the data.

    ・If the complication is not updated even after launching CalCs, the issue may be resolved by one of the following methods. Please try them.
    1. Restart both your iPhone and Apple Watch.

    2. Force restart CalCs
    ① With CalCs open, press and hold the side button.
    ② When the screen for emergency call and power off appears, press and hold the Digital Crown.

    3. Reinstall CalCs
    ① Press the Digital Crown to display the app list.
    ② Press and hold CalCs, then tap the × button to delete it when it appears.
    ③ Launch the App Store app on your Apple Watch.
    ④ Scroll to the bottom→"Account"→"Purchased"→"CalCs"→Re-download.

    ・If the complication does not update after force quitting and restarting CalCs, try restarting both your iPhone and Apple Watch, as it may resolve the issue.

    ・If event information is not displayed on the app's main event/reminder list screen or in complications, it may be because full access to the calendar has not been granted.
    The issue may be resolved by following the steps below to re-enable full access permission to the calendar. Please give it a try.
    ①Open the "Privacy & Security" section in the iPhone Settings app & tap "Calendars".
    ②Change CalCs' calendar access to "None", then select "Add Events Only".
    ③When you open CalCs, you will be prompted to grant full access, so tap "Allow Full Access".
  • 版本: 1.86

    版本更新日期

    2026-02-02

    CalCs - Calendar Complications

    CalCs - Calendar Complications

    Various calendar complications

    更新日志

    ・Added a type that displays the current or next event in the four-corner, circular, single-line complication.
    ・Fixed an issue where CalCs might not detect changes when the end time of an event is modified on iPhone.
    ・Fixed other minor issues.

    应用描述

    暂无应用描述数据

  • 版本: 1.85

    版本更新日期

    2026-01-20

    CalCs - Calendar Complications

    CalCs - Calendar Complications

    Various calendar complications

    更新日志

    Added a type of corner complication that shows the current date on the outside and the next event on the inside.
    Fine-tuned the layout of the complication type that shows a 5-week calendar on the left and date information with the next event on the right.
    Corrected typos and inconsistent wording for cases where the display language is set to something other than Japanese, as far as noticed.
    Fixed other minor bugs.

    应用描述

    暂无应用描述数据

  • 版本: 1.84

    版本更新日期

    2026-01-06

    CalCs - Calendar Complications

    CalCs - Calendar Complications

    Various calendar complications

    更新日志

    Fixed a bug that caused events spanning multiple days with time settings to be displayed multiple times in certain complications.

    视频/截图

    CalCs - Calendar Complications App 截图
    CalCs - Calendar Complications App 截图
    CalCs - Calendar Complications App 截图
    CalCs - Calendar Complications App 截图
    CalCs - Calendar Complications App 截图
    CalCs - Calendar Complications App 截图

    应用描述

    CalCs (short for "Calendar Complications") is a watchOS-only app that provides various complications related to the calendar.

    ---Important Notes---
    The features built into the main body of this app are limited to listing events/reminders & displaying a monthly calendar.
    All other features are provided through complications & the Smart Stack.

    ●If you download CalCs from the iPhone App Store, due to synchronization issues between the iPhone & Apple Watch, CalCs may not appear on the Apple Watch.
    According to Apple's specifications, watchOS-only apps cannot be re-downloaded from the App Store app on the iPhone.
    Therefore, please use the App Store app "on your Apple Watch" and follow the steps below to re-download it.
    ・Scroll to the bottom → "Account" → "Purchased" → "CalCs" → re-download
    -------------------

    Key Features
    ●Supports a variety of complications such as date display, events/reminders display, & monthly calendar display

    ・Date Display
    Displays the current date in various formats.

    ・Event/Reminder Display
    Displays events/reminders synced with your iPhone.
    You can choose whether or not to include all-day events.

    ・Monthly Calendar Display
    Displays the monthly calendar in various formats.
    You can choose to start the week on Monday.
    It also supports holidays in some areas.

    ●In the main app, events/reminders, & the monthly calendar are displayed
    Tapping the complication opens the app, where you can view the list of events/reminders synced with your iPhone, as well as the monthly calendar.

    *Only incomplete reminders are displayed.
    *The app currently does not have functionality to add, edit, or delete events/reminders, nor to mark reminders as complete. Please understand.

    ●Minimal Setting Options
    To avoid complicating settings on the small Apple Watch screen, the settings only allow you to select which calendar/reminder lists to display.

    *Notes
    ・The corner complications, circular complications, & large rectangular complications are supported only on Apple Watch Series 4 & later, so CalCs is not guaranteed to work on Series 3 or earlier models.

    ・Due to the limitations of watchOS complication display updates, complications may not immediately reflect changes when the date changes or after events or reminders are added or edited on the iPhone.

    ・After placing a complication for the 1st time, it may take some time for it to actually appear.

    ・If the complication is not updating, try tapping the complication to open CalCs, as this may refresh the data.

    ・If the complication is not updated even after launching CalCs, the issue may be resolved by one of the following methods. Please try them.
    1. Restart both your iPhone and Apple Watch.

    2. Force restart CalCs
    ① With CalCs open, press and hold the side button.
    ② When the screen for emergency call and power off appears, press and hold the Digital Crown.

    3. Reinstall CalCs
    ① Press the Digital Crown to display the app list.
    ② Press and hold CalCs, then tap the × button to delete it when it appears.
    ③ Launch the App Store app on your Apple Watch.
    ④ Scroll to the bottom → "Account" → "Purchased" → "CalCs" → Re-download.

    ・If the complication does not update after force quitting and restarting CalCs, try restarting both your iPhone and Apple Watch, as it may resolve the issue.

    ・If event information is not displayed on the app's main event/reminder list screen or in complications, it may be because full access to the calendar has not been granted.
    The issue may be resolved by following the steps below to re-enable full access permission to the calendar. Please give it a try.
    ①Open the "Privacy & Security" section in the iPhone Settings app & tap "Calendars".
    ②Change CalCs' calendar access to "None", then select "Add Events Only".
    ③When you open CalCs, you will be prompted to grant full access, so tap "Allow Full Access".
  • 版本: 1.83

    版本更新日期

    2025-12-18

    CalCs - Calendar Complications

    CalCs - Calendar Complications

    Various calendar complications

    更新日志

    Adjusted the layout of the complication that shows a 5 week calendar on the left with the date information and upcoming event on the right.

    视频/截图

    CalCs - Calendar Complications App 截图
    CalCs - Calendar Complications App 截图
    CalCs - Calendar Complications App 截图
    CalCs - Calendar Complications App 截图
    CalCs - Calendar Complications App 截图
    CalCs - Calendar Complications App 截图

    应用描述

    CalCs (short for "Calendar Complications") is a watchOS-only app that provides various complications related to the calendar.

    ---Important Notes---
    The features built into the main body of this app are limited to listing events/reminders & displaying a monthly calendar.
    All other features are provided through complications & the Smart Stack.

    ●If you download CalCs from the iPhone App Store, due to synchronization issues between the iPhone & Apple Watch, CalCs may not appear on the Apple Watch.
    According to Apple's specifications, watchOS-only apps cannot be re-downloaded from the App Store app on the iPhone.
    Therefore, please use the App Store app "on your Apple Watch" and follow the steps below to re-download it.
    ・Scroll to the bottom → "Account" → "Purchased" → "CalCs" → re-download
    -------------------

    Key Features
    ●Supports a variety of complications such as date display, events/reminders display, & monthly calendar display

    ・Date Display
    Displays the current date in various formats.

    ・Event/Reminder Display
    Displays events/reminders synced with your iPhone.
    You can choose whether or not to include all-day events.

    ・Monthly Calendar Display
    Displays the monthly calendar in various formats.
    You can choose to start the week on Monday.
    It also supports holidays in some areas.

    ●In the main app, events/reminders, & the monthly calendar are displayed
    Tapping the complication opens the app, where you can view the list of events/reminders synced with your iPhone, as well as the monthly calendar.

    *Only incomplete reminders are displayed.
    *The app currently does not have functionality to add, edit, or delete events/reminders, nor to mark reminders as complete. Please understand.

    ●Minimal Setting Options
    To avoid complicating settings on the small Apple Watch screen, the settings only allow you to select which calendar/reminder lists to display.

    *Notes
    ・The corner complications, circular complications, & large rectangular complications are supported only on Apple Watch Series 4 & later, so CalCs is not guaranteed to work on Series 3 or earlier models.

    ・Due to the limitations of watchOS complication display updates, complications may not immediately reflect changes when the date changes or after events or reminders are added or edited on the iPhone.

    ・After placing a complication for the 1st time, it may take some time for it to actually appear.

    ・If the complication is not updating, try tapping the complication to open CalCs, as this may refresh the data.

    ・If the complication is not updated even after launching CalCs, the issue may be resolved by one of the following methods. Please try them.
    1. Restart both your iPhone and Apple Watch.

    2. Force restart CalCs
    ① With CalCs open, press and hold the side button.
    ② When the screen for emergency call and power off appears, press and hold the Digital Crown.

    3. Reinstall CalCs
    ① Press the Digital Crown to display the app list.
    ② Press and hold CalCs, then tap the × button to delete it when it appears.
    ③ Launch the App Store app on your Apple Watch.
    ④ Scroll to the bottom → "Account" → "Purchased" → "CalCs" → Re-download.

    ・If the complication does not update after force quitting and restarting CalCs, try restarting both your iPhone and Apple Watch, as it may resolve the issue.

    ・If event information is not displayed on the app's main event/reminder list screen or in complications, it may be because full access to the calendar has not been granted.
    The issue may be resolved by following the steps below to re-enable full access permission to the calendar. Please give it a try.
    ①Open the "Privacy & Security" section in the iPhone Settings app & tap "Calendars".
    ②Change CalCs' calendar access to "None", then select "Add Events Only".
    ③When you open CalCs, you will be prompted to grant full access, so tap "Allow Full Access".
  • 版本: 1.82

    版本更新日期

    2025-12-17

    CalCs - Calendar Complications

    CalCs - Calendar Complications

    Various calendar complications

    更新日志

    ・Added a large rectangular complication with a 5 week calendar on the left and date information plus the next event on the right.
    ・Fixed minor bugs.

    应用描述

    暂无应用描述数据

  • 版本: 1.81

    版本更新日期

    2025-12-09

    CalCs - Calendar Complications

    CalCs - Calendar Complications

    Various calendar complications

    更新日志

    ・Fixed some layout issues that occurred in watchOS 26.
    ・Fixed an issue where chart-type complications might not update correctly under certain conditions.

    视频/截图

    CalCs - Calendar Complications App 截图
    CalCs - Calendar Complications App 截图
    CalCs - Calendar Complications App 截图
    CalCs - Calendar Complications App 截图
    CalCs - Calendar Complications App 截图
    CalCs - Calendar Complications App 截图

    应用描述

    CalCs (short for "Calendar Complications") is a watchOS-only app that provides various complications related to the calendar.

    ---Important Notes---
    The features built into the main body of this app are limited to listing events/reminders & displaying a monthly calendar.
    All other features are provided through complications & the Smart Stack.

    ●If you download CalCs from the iPhone App Store, due to synchronization issues between the iPhone & Apple Watch, CalCs may not appear on the Apple Watch.
    According to Apple's specifications, watchOS-only apps cannot be re-downloaded from the App Store app on the iPhone.
    Therefore, please use the App Store app "on your Apple Watch" and follow the steps below to re-download it.
    ・Scroll to the bottom → "Account" → "Purchased" → "CalCs" → re-download
    -------------------

    Key Features
    ●Supports a variety of complications such as date display, events/reminders display, & monthly calendar display

    ・Date Display
    Displays the current date in various formats.

    ・Event/Reminder Display
    Displays events/reminders synced with your iPhone.
    You can choose whether or not to include all-day events.

    ・Monthly Calendar Display
    Displays the monthly calendar in various formats.
    You can choose to start the week on Monday.
    It also supports holidays in some areas.

    ●In the main app, events/reminders, & the monthly calendar are displayed
    Tapping the complication opens the app, where you can view the list of events/reminders synced with your iPhone, as well as the monthly calendar.

    *Only incomplete reminders are displayed.
    *The app currently does not have functionality to add, edit, or delete events/reminders, nor to mark reminders as complete. Please understand.

    ●Minimal Setting Options
    To avoid complicating settings on the small Apple Watch screen, the settings only allow you to select which calendar/reminder lists to display.

    *Notes
    ・The corner complications, circular complications, & large rectangular complications are supported only on Apple Watch Series 4 & later, so CalCs is not guaranteed to work on Series 3 or earlier models.

    ・Due to the limitations of watchOS complication display updates, complications may not immediately reflect changes when the date changes or after events or reminders are added or edited on the iPhone.

    ・After placing a complication for the 1st time, it may take some time for it to actually appear.

    ・If the complication is not updating, try tapping the complication to open CalCs, as this may refresh the data.

    ・If the complication is not updated even after launching CalCs, the issue may be resolved by one of the following methods. Please try them.
    1. Restart both your iPhone and Apple Watch.

    2. Force restart CalCs
    ① With CalCs open, press and hold the side button.
    ② When the screen for emergency call and power off appears, press and hold the Digital Crown.

    3. Reinstall CalCs
    ① Press the Digital Crown to display the app list.
    ② Press and hold CalCs, then tap the × button to delete it when it appears.
    ③ Launch the App Store app on your Apple Watch.
    ④ Scroll to the bottom → "Account" → "Purchased" → "CalCs" → Re-download.

    ・If the complication does not update after force quitting and restarting CalCs, try restarting both your iPhone and Apple Watch, as it may resolve the issue.

    ・If event information is not displayed on the app's main event/reminder list screen or in complications, it may be because full access to the calendar has not been granted.
    The issue may be resolved by following the steps below to re-enable full access permission to the calendar. Please give it a try.
    ①Open the "Privacy & Security" section in the iPhone Settings app & tap "Calendars".
    ②Change CalCs' calendar access to "None", then select "Add Events Only".
    ③When you open CalCs, you will be prompted to grant full access, so tap "Allow Full Access".
  • 版本: 1.80

    版本更新日期

    2025-12-02

    CalCs - Calendar Complications

    CalCs - Calendar Complications

    Various calendar complications

    更新日志

    Improved the stability of ongoing or next some events complications.

    视频/截图

    CalCs - Calendar Complications App 截图
    CalCs - Calendar Complications App 截图
    CalCs - Calendar Complications App 截图
    CalCs - Calendar Complications App 截图
    CalCs - Calendar Complications App 截图
    CalCs - Calendar Complications App 截图

    应用描述

    CalCs (short for "Calendar Complications") is a watchOS-only app that provides various complications related to the calendar.

    ---Important Notes---
    The features built into the main body of this app are limited to listing events/reminders & displaying a monthly calendar.
    All other features are provided through complications & the Smart Stack.

    ●If you download CalCs from the iPhone App Store, due to synchronization issues between the iPhone & Apple Watch, CalCs may not appear on the Apple Watch.
    According to Apple's specifications, watchOS-only apps cannot be re-downloaded from the App Store app on the iPhone.
    Therefore, please use the App Store app "on your Apple Watch" and follow the steps below to re-download it.
    ・Scroll to the bottom → "Account" → "Purchased" → "CalCs" → re-download
    -------------------

    Key Features
    ●Supports a variety of complications such as date display, events/reminders display, & monthly calendar display

    ・Date Display
    Displays the current date in various formats.

    ・Event/Reminder Display
    Displays events/reminders synced with your iPhone.
    You can choose whether or not to include all-day events.

    ・Monthly Calendar Display
    Displays the monthly calendar in various formats.
    You can choose to start the week on Monday.
    It also supports holidays in some areas.

    ●In the main app, events/reminders, & the monthly calendar are displayed
    Tapping the complication opens the app, where you can view the list of events/reminders synced with your iPhone, as well as the monthly calendar.

    *Only incomplete reminders are displayed.
    *The app currently does not have functionality to add, edit, or delete events/reminders, nor to mark reminders as complete. Please understand.

    ●Minimal Setting Options
    To avoid complicating settings on the small Apple Watch screen, the settings only allow you to select which calendar/reminder lists to display.

    *Notes
    ・The corner complications, circular complications, & large rectangular complications are supported only on Apple Watch Series 4 & later, so CalCs is not guaranteed to work on Series 3 or earlier models.

    ・Due to the limitations of watchOS complication display updates, complications may not immediately reflect changes when the date changes or after events or reminders are added or edited on the iPhone.

    ・After placing a complication for the 1st time, it may take some time for it to actually appear.

    ・If the complication is not updating, try tapping the complication to open CalCs, as this may refresh the data.

    ・If the complication is not updated even after launching CalCs, the issue may be resolved by one of the following methods. Please try them.
    1. Restart both your iPhone and Apple Watch.

    2. Force restart CalCs
    ① With CalCs open, press and hold the side button.
    ② When the screen for emergency call and power off appears, press and hold the Digital Crown.

    3. Reinstall CalCs
    ① Press the Digital Crown to display the app list.
    ② Press and hold CalCs, then tap the × button to delete it when it appears.
    ③ Launch the App Store app on your Apple Watch.
    ④ Scroll to the bottom → "Account" → "Purchased" → "CalCs" → Re-download.

    ・If the complication does not update after force quitting and restarting CalCs, try restarting both your iPhone and Apple Watch, as it may resolve the issue.

    ・If event information is not displayed on the app's main event/reminder list screen or in complications, it may be because full access to the calendar has not been granted.
    The issue may be resolved by following the steps below to re-enable full access permission to the calendar. Please give it a try.
    ①Open the "Privacy & Security" section in the iPhone Settings app & tap "Calendars".
    ②Change CalCs' calendar access to "None", then select "Add Events Only".
    ③When you open CalCs, you will be prompted to grant full access, so tap "Allow Full Access".