TerraTime Pro World AlarmClock

Udekowski LLC

About this app

Start with a visually stunning virtual Earth in the palm of your hand: Real satellite photos drive a live simulation of day/night, clouds, seasons, sun, moon and more. Then, our unique clock and compass track the local movements and transitions of the sun and moon. It’s everything you need to stay connected to the world you live in.

And not just your local time: create a list of locations to show on the globe, and now this beauty is a world clock, too. Set alarms for anywhere, anytime, including sun and moon rise and set. See it all at a glance: not just what time it is in other places, but how those times relate to each other. It's the nature of time.

Lots of extras complete the picture: augmented reality, home screen widgets, live wallpapers, Wear OS watch faces. There’s no other app like TerraTime.


Great for travelers, astronomers, weather watchers, geographers, teachers, photographers, fishermen and other outdoor types - as well as just about any geek you can think of.

Superbly stylish, incredibly detailed and unbeatably useful - LifeOfAndroid.com
TerraTime is unique. It is bold and different... - AndroidApps Review
Possibly the most beautiful phone app I’ve seen. Highly recommended. - AndroidAstronomer.com
The overall beauty of the app is well, its beauty! - CoolSmartPhone.com
It's spot-on no matter where you look at it in the world - The Sun (UK newspaper)

Features:
• Easily shows any location, any date, any time
• Daylight clock and compass show sunrise & sunset; twilight & transit times; moon phase, rise & set
• Multiple clock/compass styles (currently Material, Classic, Wave, and Ouroboros)
• Independent time zone data: more up-to-date than what your phone has
• Globe and map depict real-time night-side shadow (on both Earth and Moon)
• Photorealistic simulations include clouds, city lights, sea ice, and more, generated from actual satellite imagery
• Globe and map are fully interactive, using touchscreen or device sensors
• AR View plots sun and moon paths in augmented reality (on supported devices)
• Clock and globe widgets for your home screen
• Live wallpapers for real-time map and globe
• Wear OS watch faces (4 styles), complications (10), and tiles (2)
• Alarms you can set for any time zone - or for sunrise, sunset, etc. at any location

Please, if you have any issues, email us! There's a link in the app's About screen.

Ratings and reviews

Since the Feb update, this isn't usable. It's hit or miss on the one thing an alarm app is supposed to do, that is, alarm at a specific time. About 30% of the time, it just doesn't trigger. Also when it does bother to work it won't use the alarm sound you have set. But mostly, I'm now late. Again.

Beautiful design. I really appreciate a date/time app that displays so much information on such a clean interface. Three features I'd love to see: a soft button that links to my phone's native alarm function, an "always on" option - at least for when the phone is on a charger - and a native swipe up/down (or similar) function to adjust screen brightness. These features would make this an excellent desk clock. UPDATE: The more I use this app, the more I like it! Yet I'd still like to see other optional functions: my work is logged in GMT, so it would be nice to have a small GMT display. I'd also like to see an option to display a seconds hand, both sweeping (like a mechanical watch) and ticking (like a quartz watch), and a soft button to re-sync the phone's internal clock to a time server or, better, to GPS. I'm a mechanical watch enthusiast, and these last functions would allow me to use TerraTime Pro, exclusively (rather than separate time hack apps).

This has to be one of the best looking world clocks I've seen! Ability to add multiple locations and check on their daylight status along with near real-time simulation of the earth too! On my wishlist is the ability to add locations via coordinates (I have a friend who works in a remote area and I'd love to be able to check his sunlight too) as well as an option to display all 3 stages of twilight on the clock as increasingly darker shades. With those two, this clock will rock my vote!

What’s new

• Update time zone rules (tzdata 2025agtz)
• Bug fixes
• Compliance updates