AstroClock

4.2
511 reviews
Content rating
Everyone
50K+
Downloads
Content rating
Everyone
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About this app

Calendars divide years into months of irregular length and even the length of a year changes during leap years!
AstroClock visualizes time according to three consistent natural cycles i.e. day, moon and season.
Time is indicated by three hands which each turn once for each cycle.

This app runs on Phone/Tablet, Wear OS, Android TV

On Phones and Tablets you can add AstroClock as an App Widget on your launcher.
On Wear OS devices you can use AstroClock as a Tile.


# Frequently asked questions

- How does this clock measure time
It does not measure time in hours or minutes but rather in years, moons, or days. The clock hands turn in clockwise direction just like a normal clock. The only real difference is that unlike seconds and minutes, there is not a whole number of days in a moon or moons in year.

- Can I make my own graphics theme or skin?
Yes, instructions will be published soon. Artists get their name and a clickable link in the app.

- There is no advertising and no in-app purchase. Do you make any money on this?
No, only spending money. To contribute to reducing my losses please consider [sponsoring](https://github.com/sponsors/arnodenhond)

# Requirements
- Phone / Tablet: Android 6+
- Wearable: Wear OS 3+
- Television: Android TV 6+

# Privacy Policy
This software does not collect, store, share, or use any personal or sensitive user data.
Your location needs to be known to show the position of the sun. Your location will never be tracked, shared or used in any other way.

# Permissions
Location - needed to show the position of the sun.

# Contact
https://www.arnodenhond.com/astroclock
https://www.github.com/arnodenhond/AstroClock
Updated on
Oct 13, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
No data collected
Learn more about how developers declare collection

Ratings and reviews

3.9
467 reviews
roi
April 5, 2026
It doesn't shrink to fit the screen of phone for wallpaper. Wish to grant While Using The App for location permission in watch rather than All The Time to save battery! Wish to rate high if it works.
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Arno den Hond
April 5, 2026
The type of permission does not have any influence on the frequency of location acquisition which is always of the low-power type. Due to the design of Android "while using app" would not work for Widget on phone or Tile on watch. Thank you for reporting the Live Wallpaper issue which is now on the to-do list.
Amy Freestone
October 6, 2025
I've loved your app's widget for years, but this latest update made it suddenly stop working. It now appears to just show all the widget components disconnected from one another. EDIT: Super responsive dev, and if anyone else has the issue, I should have tried uninstalling and reinstalling first because that ended up fixing it.
2 people found this review helpful
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Arno den Hond
October 7, 2025
So glad to hear you love the widget!
Mr. Clay
November 16, 2025
This is the Best Astro Clock I have ever used. It used to be perfect but now it crashes and doesn't display correctly in LWP mode, so 4 stars. I would like to give a 5 star review when functional.
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What’s new

fix watch shapes