Atomic Clock
FSP Apps Tools Contains ads
Shows the most accurate time. Sets accurate time for rooted devices.
- Rating
- 3.9
- 193 ratings
- Downloads
- 50K+
- on Google Play
- Price
- Free
- No in-app purchases
- Updated
- Oct 25
- 2015 · v2.0
Screenshots
About Atomic Clock
This clock displays the most accurate time.
This app is a perfect choice for the new year 2020 countdown!
Birthday, New Year's Eve or for daylight saving time changes. This app will show you the exact time.
Atomic Clock can set the current time for your automatically in the background (requires root)
Tab the clock to hide and show the control buttons.
Features
- Shows accurate time
- Landscape- and portrait-mode
- Option to show or hide milliseconds
- 2h and am/pm-mode
- Choose display refreshrate. A lower value slower drains the battery
- Automatically sets the current time and date. This option is only available for root users.
To receive the most accurate time, best use this app on a stable wifi or 3G connection.
Technical info:
The time is synchronized using the NTP-protocol and therefore requires internet access.
Atomic Clock uses your mobile only as clock generator, the actual accurate time is received from one of the NTP-servers.
This app is a perfect choice for the new year 2020 countdown!
Birthday, New Year's Eve or for daylight saving time changes. This app will show you the exact time.
Atomic Clock can set the current time for your automatically in the background (requires root)
Tab the clock to hide and show the control buttons.
Features
- Shows accurate time
- Landscape- and portrait-mode
- Option to show or hide milliseconds
- 2h and am/pm-mode
- Choose display refreshrate. A lower value slower drains the battery
- Automatically sets the current time and date. This option is only available for root users.
To receive the most accurate time, best use this app on a stable wifi or 3G connection.
Technical info:
The time is synchronized using the NTP-protocol and therefore requires internet access.
Atomic Clock uses your mobile only as clock generator, the actual accurate time is received from one of the NTP-servers.
What’s new
Version 2.0 · Updated October 25, 2015
Version 2.0 * automatically set date and time in background (requires root) * new design * bugfixes
User reviews
بسیار عالیست
Awesome with milliseconds!
Simple and accurate. Exactly what I wanted. Thank you.
RAS 1:00 ATOM pm♡am
The only one that works
Great App for when you really want to know PRECISELY what time it is, to set your watch to the exact second, for instance. Simple yet very useful.
Alternatives to Atomic Clock
Looking for apps like Atomic Clock? Here are 5 similar Android apps on Google Play. The highest rated is Timezone Converter - World Tim (4.8/5), and 4 of the 5 are free to download.
-
Fluid Mechanics Calc
-
World Clock Widget 2023 Pro 4.6
-
Time Clock Wizard 3.3
-
Timezone Converter - World Tim 4.8
-
Tiny Hours: Track Working Time 4.1
| App | Rating | Price | Installs | Last updated | Compare |
|---|---|---|---|---|---|
| Atomic Clock | 3.9 / 5 | Free | 50,000+ | Oct 25, 2015 | |
| Fluid Mechanics Calc | – | Free | 10,000+ | May 20, 2025 | Compare |
| World Clock Widget 2023 Pro | 4.6 / 5 | 4.49 USD | 5,000+ | Oct 30, 2025 | Compare |
| Time Clock Wizard | 3.3 / 5 | Free | 100,000+ | Aug 27, 2026 | Compare |
| Timezone Converter - World Tim | 4.8 / 5 | Free | 100,000+ | Dec 29, 2024 | Compare |
| Tiny Hours: Track Working Time | 4.1 / 5 | Free | 10,000+ | Jan 25, 2024 | Compare |
Compare Atomic Clock with the top alternatives: ratings, updates, ASO score and keyword gaps →