About this app

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 operating systems include: Tizen (Samsung GEAR and GALAXY 3 and earlier), Garmin, HarmonyOS (like Huawei Watch GT2).
If you have a Galaxy Watch 4, 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. It has become the most popular chronograph watch face for Wear OS. 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 (also available on the web version) labels each button according to the momentary state of the watch and helps you to quickly get familiarized with the basics. To activate it, simply tap on the area above the watch.

Discover all the special features and great usability of Cronosurf Wave. You will love it!

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

Standalone Android smartwatches are also supported. Note that Cronosurf runs as a regular app on these devices (not as a native watchface).

Key features
- 12-Hour Stopwatch/Chronometer 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
- Second hand: pulse or sweep motion
- Set mode supports set-by-drag (not on Wear OS watches)
- Torch function
- Day/Night modes (white/colored components)
- Tachymeter in stopwatch mode (experimental)
- Wear OS: Optional automatic Day/Night mode switching at user defined 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 Live Wallpaper.)
- Lots of extra functionality you've probably never seen on other chronographs
- Ad-based, (only small banner, no fullscreen ads)


Permissions:
- Run at startup: For reactivating a pending AL or CD.
- Prevent device from sleeping: While an alarm is being played, so the user can see the watch and stop the alarm.

New features

v4.1.6 Wear OS
- Messages now appear on the bottom on the screen. This solves the issue on newer versions of Wear OS were the graphical menu could not be opened since the message was blocking the center of the screen

App Permissions

Allows an application to receive the ACTION_BOOT_COMPLETED that is broadcast after the system finishes booting.
Allows using PowerManager WakeLocks to keep processor from sleeping or screen from dimming.
Allows access to the vibrator.
Allows an app to create windows using the type TYPE_APPLICATION_OVERLAY, shown on top of all other apps.
Allows applications to open network sockets.
Allows applications to access information about networks.