CalCs - Calendar Complications
CalCs - Calendar Complications Summary
CalCs - Calendar Complications is a with in-app purchases iOS app in Tools by Akihiro Usui. Released in Apr 2024 (2 years ago). It has 16 ratings with a 4.33★ (good) average. Based on AppGoblin estimates, it reaches roughly 45 monthly active users and generates around $<10K monthly revenue (100% IAP / 0% ads). Store metadata: updated Jun 12, 2026.
Store info: Last updated on App Store on Jun 12, 2026 .
4.33★
Ratings: 16
Screenshots
App Description
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" & follow the steps below to re-download it.
・Scroll to the bottom→"Account"→"Purchased"→"CalCs"→re-download
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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.
Supports holidays in some areas.
*Holiday data depends on external APIs & may be incomplete.
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 1, 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.
●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