Cronosurf Wave is a chronograph watch app for Android devices and a watchface for Wear OS! No other OS are supported for now. SOME UNSUPPORTED OS include: Tizen (Samsung GEAR, GALAXY 3 and earlier), Garmin, HarmonyOS (like Huawei Watch GT2).
Galaxy Watch4: please install from Google Play directly on the watch.

This app is based on the original design started 2014 as a web-based technology demonstrator (cronosurf.com). Its main focus lays on design, functionality and usability. If you are a chronograph watch lover, you'll find yourself using Cronosurf as your day-to-day app for alarm, countdown timer and stopwatch!

Since Cronosurf has many features, the app includes a comprehensive user manual. The Button Assistant is now integrated in the app (portrait mode). Use it to quickly getting familiarized with the basics. To activate it, tap on the area above the watch.

Cronosurf Wave runs on Wear OS watches and without the need of an Android device! Install it directly from Google Play on the watch.

Pay only once! If Google Play wants to charge again when installing on Wear OS, please wait a few hours until the servers sync the first purchase.

Optional "Android Smartwatch Mode" for standalone Android watches (like the Finow X5) to optimize the app for the watch screen. (Cronosurf runs as an app on these devices, not as a native watchface).


Key features
- 12-Hour Stopwatch with 1/20 seconds resolution
- 12-Hour Countdown-Timer (CD) with optional automatic repetition
- Daily/Once Alarm (AL) with optional gradual volume
- Optional vibration for AL/CD signals
- Customizable presets for both AL and CD
- World Time with 15 minutes steps
- Current date, day of the week and the unique Cronosurf's monthly calendar
- Innovative 100-year-Calendar
- Week number
- Indication of moon phases
- Compass (when supported by device)
- Screen-On timer
- Analog and digital battery level indicators
- Seconds hand: pulse or sweep motion
- Set mode supports set-by-drag (not on Wear OS watches)
- Torch function
- Day/Night modes
- Tachymeter in stopwatch mode (experimental)
- Wear OS: Optional automatic Day/Night mode switching at fixed times or via light sensor (when available)
- Wear OS + Android standalone: Auto-Return to TME mode after 1.5 minutes; long press [B] disables for current mode till next mode change
- Wear OS: Optional minimalist ambient mode
- Wear OS: Support for Moto 360 and other 'flat tire' displays
- Live Wallpaper (basic interactivity, customizable background, adjustable size/position; enable it like any other LWP)
- Lots of extra functionality you've probably never seen on other chronographs


PRO VERSION features
- Ad-free
- 5 customizable colors presets
- 4 instead of 2 presets each for AL and CD
- Quick stopwatch (one button press from time mode)
- Split function for the stopwatch
- Flyback chronograph function
- Thousandths of a second for stopwatch
- Tachymeter + Telemeter in stopwatch mode (experimental)
- Reference pointer for the compass
- Weather information for a user defined location: Temperature and humidity, sunrise/sunset times
- Landscape mode support
- For the Live Wallpaper, any image from the gallery can be set as a background image
WEAR OS:
- Automatic Day/Night mode switching additionally at sunrise/sunset times
- Party Mode (automatic color change every couple of minutes)
- Optional hourly chime
- Step counter (experimental)
- Ambient mode brightness reduction options, 25% and 50%
- Button lock
- Info box with watch temperature

Permissions:
- Storage: Image loading for the LWP
- Run at startup: For reactivating a pending AL/CD.
- Prevent device from sleeping: While an alarm is being played, so the user can stop it
- Allow display over other apps: (Android 10+ only) To bring the app in the foreground when an AL/CD is triggered

SEPARATE MANUALS AND FAQ: cronosurf.com/support