Calculator Complication

A real four-function calculator on your wrist — and it works on its own.
Open the app and you get a working vintage-style pocket calculator, right on your watch. No watch face required, no purchase required. When idle, it shows the time; tap in and it calculates.

** What it does **

Open the app for a full 8-digit calculator that behaves like a classic pocket calculator:

- Add, subtract, multiply, divide
- Decimal entry, up to 8 digits on screen
- Repeat operations (press = again to apply the last calculation)
- Power calculations via double-operator (3 × × = gives 9, again 27, again 81)
- Honest error handling — divide by zero, overflow, and underflow all show "E" until you press C

When idle it shows the time — 12-hour or 24-hour, matching your watch's setting. Your calculation state survives screen-off and reboot, so you can pick up where you left off.

** See it in action **

Watch a short demo of the calculator and how to use it with a watch face:
https://www.instagram.com/reel/DZneB-DNopy/

** Optional: pair it with a compatible watch face **

For an integrated experience, the calculator can also be driven from a compatible CELEST watch face that has calculator buttons drawn around the complication slot. On a compatible face, tap the on-face buttons and the complication switches between the clock and the calculator. This is an optional enhancement — the in-app calculator works without any watch face.
Compatible watch face:

CELEST5659 Retro Digital Watch

https://play.google.com/store/apps/details?id=com.watchfacestudio.celest5659
More compatible faces will be added as they're released. Generic watch faces with a plain complication slot won't include the calculator buttons, so use a compatible face for the on-face experience.

** Why this exists **

Plenty of "calculator" watch faces look the part — buttons drawn on, numbers on the display — but tap a button and nothing happens. They're decorations. This is the working version: the math is real, the precision is real, the buttons actually compute. It's a small app doing one thing carefully.

** About CELEST Watches **

CELEST Watches is an independent studio designing watch faces and utility apps for Wear OS, Huawei, and Apple Watch via Facer. The Calculator Complication is part of a small line of focused utility apps that pair with CELEST watch face designs.

** Installation Help & Troubleshooting **

- The calculator works on its own once installed — just open the app.
- To use it on a watch face, pair it with one of the compatible faces above.
- Installation and troubleshooting guide: https://celest-watches.com/installation-troubleshooting/
- Contact us at info@celest-watches.com for quick support

** Discover More **

Browse our full collection of watch faces and utility apps:
🔗 https://celest-watches.com

** Support & Community **

📧 Support: info@celest-watches.com
📱 Follow @celestwatches on Instagram, or sign up for our newsletter!

Recent changes:
Updated to target Android 16 (API 36).