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

--- Important Notes ---
The only functionality in the main body of the app is the listing of events.
The display of the monthly calendar and other functions are performed by the Complication or Smart Stack.
In order to display a month's worth of calendars on the complication, a Series 7 or later model, excluding the SE, must be compatible with the Modular Duo watch face.
(Even for models that do not support the Modular Duo, it's possible to display a 3 weeks calendar on the complication and a month's worth of calendars on the Smart Stack.)
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Main Features
●Supports various complications
・Date Display
Displays the current date in various formats.
It supports 4-corner, circular, and 1-line complications.

・Next Event Display
Displays the next event synchronized with the iPhone.
You can also choose to include or exclude all-day events.
It supports 4-corner, circular, and 1-line complications.
*In a circular complication, the title of the event is displayed up to the 1st 3 characters.

・Next 3 Events Display
Displays next 3 events synchronized with the iPhone.
This complication can be a large rectangular complication on a watch face such as Modular, or Smart Stack.

・Monthly Calendar Display
Displays the calendar for the current month.
It can also be set to start on Monday.
This complication can be a large rectangular complication, or Smart Stack.
There are 3 types: one that displays 3 weeks (last week, this week, and next week), one that displays the 1st half of the month, and one that displays the 2nd half of the month.
Placing the type that displays the 1st half and 2nd half of the month on a Modular Duo watch face or Smart Stack allows you to view a month's worth of calendars.

●The main body of the app displays a list of events
The main body of the app, which is launched by tapping on the complication, displays a list of events that have been synchronized with the iPhone.
*The ability to edit events is not implemented. Please be aware of this.

●Minimum required setting items
Since it's difficult to change various settings on the small screen of the Apple Watch, the only setting item is the selection of the calendar to be displayed.

*PRECAUTIONS
・The 4-corner, circular, and large rectangular complication work with Apple Watch Series 4 or later; CalCs does not guarantee that they will work with Series 3 or earlier models.

・Due to limitations in the watchOS complication display update, editing an event on the iPhone may not be immediately reflected in the complication.

・It may take a considerable amount of time after a complication is 1st placed before it's actually displayed.

・If the complication is not updated, tap the complication and start CalCs, and it may be updated.

・If the complication is not updated after starting CalCs, try force-quitting CalCs and restarting it. The procedure for force-quitting is as follows.
1)With CalCs open, press and hold the side button.
2)When the emergency call or power off screen appears, press and hold the digital crown

If full access to the calendar is not granted the 1st time it is launched, CalCs will not ask for access permission again. In that case, you will need to clear the permission once from the iPhone and re-allow it from CalCs.
1)Open "Calendars" under "Privacy and Security" in the iPhone Settings application.
2)Change access to CalCs calendar to "None" once, and then select "Add Appointments Only".
3)When opening CalCs, tap "Allow full access" when asked to allow full access.

・If you downloaded CalCs from the App Store app on the iPhone, CalCs may not appear on the Apple Watch due to synchronization issues between the iPhone and Apple Watch.
The watchOS-only app cannot be re-downloaded from the App Store app on the iPhone, so in this case, search for "CalCs" from the App Store app on the Apple Watch and re-download it.