CalCs Downloads & RevenueCalCs - Calendar Complications · App Store
CalCs - Calendar Complications is #4 in Utilities Paid in Japan and charting in 10 of 30 countries we track.
Updated 8 Nov 2026 · rankings refresh through the day
DeveloperAkihiro Usui
CategoryUtilities
Price0.49 USD
Released
Rating★ 4.6 (10)
Version2.0
Age rating4+
First seen by us
24 Sep 2026
24 Sep 2026Installs (est.)10k+ worldwide
CalCs - Calendar Complications update history & changes
Last change · 33 events since 24 Apr 2024Full timeline ↓🌟Featured by Apple📈Entered the top 10📦Updated to version 2.1✏️Description updated🌟Featured by Apple📈Entered the top 10 in 2 charts✏️Description updated📦Updated to version 2.0🆕First spotted by AppInsider🆕Released on the App Store
Full timeline · 33 events
- 🌟CalCs - Calendar Complications featured by Appleapps · JP
- 📈CalCs - Calendar Complications entered the top 10Top Paid · Utilities · AU
- 📦CalCs - Calendar Complications updated to version 2.112時間表示の設定にしている場合の一部のコンプリケーションのレイアウトを調整しました。
- ✏️CalCs - Calendar Complications: description updated· SE, MX, US
- 🌟CalCs - Calendar Complications featured by Appleapps · JP
- 📈CalCs - Calendar Complications entered the top 10 in 2 chartsTop Paid · Utilities · DE · Top Paid · Utilities · FR
- ✏️CalCs - Calendar Complications: description updated· 4 countries
- ✏️CalCs - Calendar Complications: app got smaller6 MB → 5 MB (-18%)
- ✏️CalCs - Calendar Complications: needs a newer iOSiOS 15.0 → iOS 26.0
- ✏️CalCs - Calendar Complications: description updated· AU, PH, KR
- ✏️CalCs - Calendar Complications: description updated· JP
- 📦CalCs - Calendar Complications updated to version 2.0・コンプリケーションの大幅な刷新
CalCs初のメジャーバージョンアップとなる本バージョンでは、コンプリケーションの仕組みを大幅に刷新しました。
従来のバージョンでは表示内容の異なるコンプリケーションを個別に用意していましたが、本バージョンでは、表示項目を自由にカスタムできる新形式のコンプリケーションを採用しました。
これにより、コンプリケーション自体の総数が大幅に削減され、目的のコンプリケーションを探しやすくなりました。
従来のコンプリケーションで提供していた表示パターンは、新形式のコンプリケーションをカスタムして配置することで、引き続きご利用いただけます。
・全ての月カレンダーコンプリケーションがイベントドット表示に対応
従来のバージョンではコンプリケーションの総数の制限により、一部の月カレンダーコンプリケーションでしかイベントドット表示に対応していませんでした。
本バージョンでは新たなコンプリケーションの仕組みにより、全ての月カレンダーコンプリケーションでイベントドット表示が可能になりました。
・多数の不具合を修正
- 大型の長方形の「次のイベント」のコンプリケーションで、場所の情報の表示がされていなかった不具合を修正しました。
- アプリ起動時の安定性の向上を図りました。
- その他の軽微な不具合を多数修正しました。
【重要な注意事項】
・watchOS 26以降が必要です。
・Apple Watch Series 5以前およびApple Watch SE (第1世代)はサポート対象外となります。
・Ver.2.0へのアップデート後、文字盤に配置していたコンプリケーションは引き継がれません。そのため新形式のコンプリケーションを再配置するまでコンプリケーションが表示されなくなります。… more - 📦CalCs - Calendar Complications updated to version 1.123Fixed multiple minor bugs.
- 📦CalCs - Calendar Complications: now updating weekly4 updates in 30 days, after a quiet two months
- 📦CalCs - Calendar Complications updated to version 1.122イベントが大量にある場合のアプリ本体の起動処理の安定性の向上を図りました。
- 📦CalCs - Calendar Complications updated to version 1.121・Fixed some localization issues.
・Fixed minor bugs. - 🌟CalCs - Calendar Complications featured by Appleapps · JP
- 🌟CalCs - Calendar Complications featured by Appleapps · JP
- 📦CalCs - Calendar Complications updated to version 1.120Fixed an issue where the Maps app might not launch when tapping an event's location information on the event details screen in the main app.
- 🌟CalCs - Calendar Complications featured by Appleapps · JP
- 📈CalCs - Calendar Complications entered the top 10Top Paid · Utilities · GB
- 🌟CalCs - Calendar Complications featured by Appleapps · JP
- 📈CalCs - Calendar Complications hit #1Top Paid · Utilities · JP
- 📈CalCs - Calendar Complications entered the top 10 in 5 chartsTop Paid · Utilities · CA · Top Paid · Utilities · IN · Top Paid · Utilities · IT · Top Paid · All Apps · JP · +1 more
- 📈CalCs - Calendar Complications entered the top 100 in 6 chartsTop Paid · Utilities · AU · Top Paid · Utilities · DE · Top Paid · All Apps · ES · Top Paid · All Apps · IN · +2 more
- 📈CalCs - Calendar Complications new best rank in the overall chart: #4Top Paid · All Apps · JP
- 🌟CalCs - Calendar Complications featured by Appleapps · JP
- 📈CalCs - Calendar Complications entered the top 10Top Paid · Utilities · KR
- 🌟CalCs - Calendar Complications featured by Appleapps · JP
- 🆕CalCs - Calendar Complications first spotted by AppInsider#87 in Top Paid · Utilities · United States
- 🌟CalCs - Calendar Complications featured by Appleapps · JP
- 📦CalCs - Calendar Complications version 1.119No release notes
- 🆕CalCs - Calendar Complications released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
4.6 ★
10 ratings
Measured
Best rank now
#4
Utilities PaidMeasured
New ratings a week
2
steady vs the 2 weeks before
Measured
CalCs - Calendar Complications at a glance
AI summary written from our chart and store data, 2026-11-08. It can be wrong: check the numbers above.
CalCs is a watchOS-only utility that provides customizable calendar, event, and reminder complications for Apple Watch users seeking detailed date information on their wrist. The app has achieved strong traction in the Japanese and Australian paid utilities charts (both #4), indicating significant regional demand for specialized watch face enhancements despite its recent April 2024 release.
Similar apps: Calendar+, WatchComplications, Date+
CalCs - Calendar Complications on the App Store
App details
App ID
6499201223
Publisher
Akihiro Usui
On the store since
Apr 2024
2 years on the store
Minimum OS
iOS 26.0+
iPhone 11 and later
Devices
iPhone · iPad · Watch
Content rating
4+
Languages
1
EN
Size
5 MB
Also listed in
Lifestyle
App privacy Measured
CalCs - Calendar Complications’s App Store privacy label declares 0 data categories used to track you across other companies’ apps and websites, 0 linked to your identity and 1 collected anonymously.
Used to track you
0
Linked to you
0
Not linked to you
1
Not linked to you
OOther Data
As declared by the developer on the App Store — Apple requires every app to publish this label. We track changes over time.
CalCs - Calendar Complications downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Apple publishes no download counts. App Store downloads come from chart positions and daily rating growth per country, calibrated on Google Play install counts; lifetime installs from ratings worldwide × installs per rating. Confidence is the chance the real number is within half to double ours.
Where CalCs - Calendar Complications's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
Retention · share of new users still active
Day 1
Day 7
Day 30
Time spent · per daily user
Average time spent Pro
min a day
Sessions a day Pro
Time per session Pro
min
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Japan | UtilitiesPaid | #4 |
| United States | UtilitiesPaid | #11 |
 Australia | UtilitiesPaid | #4 |
| Japan | All AppsPaid | #54 |
 Canada | UtilitiesPaid | #7 |
 Germany | UtilitiesPaid | #13 |
| United States | All AppsPaid | #117 |
 France | UtilitiesPaid | #11 |
 South Korea | UtilitiesPaid | #34 |
 United Kingdom | UtilitiesPaid | #56 |
 Mexico | All AppsPaid | #187 |
 Netherlands | All AppsPaid | #164 |
Apps near CalCs - Calendar Complications on the chart
Utilities Paid, around #4.
Ratings
App Store, worldwide.
Rating
4.6 ★
10 ratings
Measured
Ratings
10
Measured
Review momentum
ⓘ How we measure thisNew ratings a week
2
steady vs the 2 weeks before
Lifetime rating
3.7★
recent stars not readable yet: new ratings are a tiny share of the total
Review momentum
60/100
faster than 67% of Utilities apps
Review momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
What users say about CalCs - Calendar Complications
From the 5 most recent App Store reviews in the US.
Users highly appreciate the app's affordability and specific calendar complication features for Apple Watch. However, they report technical issues like crashes when accessing settings and minor formatting inconsistencies in date displays.
Mostly positive (100% of recent reviews give 4–5 stars). People like it for working reliably, and its features and content.
What people like
- Crashes & bugs: “(Bug) When the time is noon or midnight in 12 hour format, it displays 00:00 AM or 00:00 PM”
- Features & content: “I love this app, it has so many options!”
About CalCs - Calendar Complications
CalCs (short for "Calendar Complications") is a watchOS-only app that provides a variety of calendar-related complications for Apple Watch.
--Important Notes--
The main app is designed to list events and reminders and display a monthly calendar. Other features are available through complications and the Smart Stack.
●Re-downloading CalCs
If you download CalCs from the iPhone App Store, synchronization issues may prevent it from appearing on your Apple Watch.
According to Apple's specifications, watchOS-only apps cannot be re-downloaded from the App Store on an iPhone. To re-download CalCs, use the App Store on your Apple Watch:
・Scroll to the bottom → "Account" → "Purchased" → "CalCs" → re-download
--Key Features--
●A variety of complications
・Date: Displays the current date in various formats.
・Events and reminders: Displays events and reminders synced with your iPhone. You can choose whether to include all-day events.
・Monthly calendar: Displays a monthly calendar in various formats. You can choose to start the week on Monday. Holidays are supported in some regions.
*Holiday data is provided by external APIs and may be incomplete.
*Only Apple Watch models that support the Modular Duo face (Series 7 or later, excluding SE models) can display a monthly calendar across two large rectangular slots. Other models display it in one slot with a smaller font.
●Events, reminders, and monthly calendar in the main app
Tap a complication to open CalCs and view a list of events and reminders synced with your iPhone, as well as a monthly calendar.
*Only incomplete reminders are displayed.
*CalCs cannot currently add, edit, or delete events or reminders, or mark reminders as complete.
●Simple settings
To keep settings easy to use on the small Apple Watch screen, the only available settings are for choosing which calendars and reminder lists to display.
--Notes--
・CalCs complications use features introduced in watchOS 26. The following models are not supported:
- Apple Watch Series 5 and earlier
- Apple Watch SE (1st generation)
(Other models that have not been updated to watchOS 26 or later are also unsupported.)
・Due to watchOS limitations on complication updates, changes may not appear immediately when the date changes or when events or reminders are added or edited on your iPhone.
・After adding a complication for the first time, it may take some time to appear.
・If a complication does not update, tap it to open CalCs. This may refresh the data.
・If complications still do not update after opening CalCs, try the following:
1. Restart both your iPhone and Apple Watch.
2. Force-quit CalCs:
① With CalCs open, press and hold the side button.
② When the emergency call and power-off screen appears, press and hold the Digital Crown.
3. Reinstall CalCs:
① Press the Digital Crown to show the app list.
② Touch and hold CalCs, then tap the × button to delete it.
③ Open the App Store on your Apple Watch.
④ Scroll to the bottom → "Accou
--Important Notes--
The main app is designed to list events and reminders and display a monthly calendar. Other features are available through complications and the Smart Stack.
●Re-downloading CalCs
If you download CalCs from the iPhone App Store, synchronization issues may prevent it from appearing on your Apple Watch.
According to Apple's specifications, watchOS-only apps cannot be re-downloaded from the App Store on an iPhone. To re-download CalCs, use the App Store on your Apple Watch:
・Scroll to the bottom → "Account" → "Purchased" → "CalCs" → re-download
--Key Features--
●A variety of complications
・Date: Displays the current date in various formats.
・Events and reminders: Displays events and reminders synced with your iPhone. You can choose whether to include all-day events.
・Monthly calendar: Displays a monthly calendar in various formats. You can choose to start the week on Monday. Holidays are supported in some regions.
*Holiday data is provided by external APIs and may be incomplete.
*Only Apple Watch models that support the Modular Duo face (Series 7 or later, excluding SE models) can display a monthly calendar across two large rectangular slots. Other models display it in one slot with a smaller font.
●Events, reminders, and monthly calendar in the main app
Tap a complication to open CalCs and view a list of events and reminders synced with your iPhone, as well as a monthly calendar.
*Only incomplete reminders are displayed.
*CalCs cannot currently add, edit, or delete events or reminders, or mark reminders as complete.
●Simple settings
To keep settings easy to use on the small Apple Watch screen, the only available settings are for choosing which calendars and reminder lists to display.
--Notes--
・CalCs complications use features introduced in watchOS 26. The following models are not supported:
- Apple Watch Series 5 and earlier
- Apple Watch SE (1st generation)
(Other models that have not been updated to watchOS 26 or later are also unsupported.)
・Due to watchOS limitations on complication updates, changes may not appear immediately when the date changes or when events or reminders are added or edited on your iPhone.
・After adding a complication for the first time, it may take some time to appear.
・If a complication does not update, tap it to open CalCs. This may refresh the data.
・If complications still do not update after opening CalCs, try the following:
1. Restart both your iPhone and Apple Watch.
2. Force-quit CalCs:
① With CalCs open, press and hold the side button.
② When the emergency call and power-off screen appears, press and hold the Digital Crown.
3. Reinstall CalCs:
① Press the Digital Crown to show the app list.
② Touch and hold CalCs, then tap the × button to delete it.
③ Open the App Store on your Apple Watch.
④ Scroll to the bottom → "Accou
Latest updates
2.1
12時間表示の設定にしている場合の一部のコンプリケーションのレイアウトを調整しました。
2.0
・コンプリケーションの大幅な刷新
CalCs初のメジャーバージョンアップとなる本バージョンでは、コンプリケーションの仕組みを大幅に刷新しました。
従来のバージョンでは表示内容の異なるコンプリケーションを個別に用意していましたが、本バージョンでは、表示項目を自由にカスタムできる新形式のコンプリケーションを採用しました。
これにより、コンプリケーション自体の総数が大幅に削減され、目的のコンプリケーションを探しやすくなりました。
従来のコンプリケーションで提供していた表示パターンは、新形式のコンプリケーションをカスタムして配置することで、引き続きご利用いただけます。
・全ての月カレンダーコンプリケーションがイベントドット表示に対応
従来のバージョンではコンプリケーションの総数の制限により、一部の月カレンダーコンプリケーションでしかイベントドット表示に対応していませんでした。
本バージョンでは新たなコンプリケーションの仕組みにより、全ての月カレンダーコンプリケーションでイベントドット表示が可能になりました。
・多数の不具合を修正
- 大型の長方形の「次のイベント」のコンプリケーションで、場所の情報の表示がされていなかった不具合を修正しました。
- アプリ起動時の安定性の向上を図りました。
- その他の軽微な不具合を多数修正しました。
【重要な注意事項】
・watchOS 26以降が必要です。
・Apple Watch Series 5以前およびApple Watch SE (第1世代)はサポート対象外となります。
・Ver.2.0へのアップデート後、文字盤に配置していたコンプリケーションは引き継がれません。そのため新形式のコンプリケーションを再配置するまでコンプリケーションが表示されなくなります。
1.123
Fixed multiple minor bugs.
Store changes
What CalCs - Calendar Complications changed on its store page: name, icon, screenshots, price, size, languages, requirements.
Description updated 
Description updated
App got smaller
6 MB → 5 MB (-18%)
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