This is the universal build of AtomicClock: NTP Clock 1.5.3. It contains native libraries for every CPU architecture (arm64-v8a, armeabi-v7a, x86, x86_64), so it installs on any Android device. The trade-off is size — it's larger than per-architecture variants. Pick this one if you're unsure which CPU your phone has, or if you plan to share the APK with multiple devices.
File size: 4.1 MB • Min Android: 21 • Target Android: 28 • Version code: 18 • Framework: Native (Java/Kotlin) • Permissions: 8
Screenshots
File Information
| Package Name | partl.atomicclock |
|---|---|
| Version Name | 1.5.3 |
| Version Code | 18 |
| Architecture | Universal |
| Min Android Version | Android 21 (API 28) |
| Main Activity | partl.atomicclock.MainActivity |
| Framework | Native (Java/Kotlin) |
| File Size | 4.13 MB |
| Signature (SHA1) | 98E7DF8752883F3BBD63BF311F480789C9D7517F |
| File Hash (SHA256) | 27f0b76be563a94a248fd8e23b0143ddcee836f40198f29eede8c1c5824643d1 |
What's New
- Improved size calculation logic for widget
- Updated dependencies
- Built for Android 16
- Updated dependencies
- Built for Android 16
App Description
Ever wanted to know exact current time to celebrate someone's birthday or New Year's Eve? Or simply to synchronize clocks? AtomicClock provides the accurate time from NTP servers which are getting the time directly from atomic clocks!
• current precise time in correct time format
• analog & digital clock
• choose from different time servers or add own ones
• customizable widget with time & date
• acoustic ticking & fluid second hand
• choose between different clock faces
• switch between local time and UTC, 24-hour and 12-hour clock
• sync your physical watches & clocks
• technical info like round trip time or stratum
• Greenwich Time Signal
AtomicClock: The most accurate time on Android.
• current precise time in correct time format
• analog & digital clock
• choose from different time servers or add own ones
• customizable widget with time & date
• acoustic ticking & fluid second hand
• choose between different clock faces
• switch between local time and UTC, 24-hour and 12-hour clock
• sync your physical watches & clocks
• technical info like round trip time or stratum
• Greenwich Time Signal
AtomicClock: The most accurate time on Android.
Download AtomicClock: NTP Clock APK
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APK Permissions 8
- android.permission.ACCESS_NETWORK_STATE
- android.permission.INTERNET
- android.permission.RECEIVE_BOOT_COMPLETED
- android.permission.WAKE_LOCK
- com.android.vending.BILLING
- com.google.android.c2dm.permission.RECEIVE
- com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE
- partl.atomicclock.permission.C2D_MESSAGE
APK Verified
The cryptographic signature guarantees that the file is safe to install and was not tampered with in any way.
Frequently Asked Questions about AtomicClock: NTP Clock APK
This is the universal variant — a single APK that contains native libraries for every CPU architecture. It installs on any Android device but is larger than per-architecture variants.
Yes — the APK's signature has been cryptographically verified against the publisher's signing key. The SHA-256 hash is shown in the File Information panel so you can independently confirm the file matches the original release.
Android 21 (API level 28) or newer. Older devices will refuse the install.
Install a free app like 'CPU-Z' or 'Droid Hardware Info' from the Play Store and look at the ABI / Instruction Set row. Most phones made after 2017 are arm64-v8a; if in doubt, download the universal variant.
All variants are functionally identical — same features, same version. They differ only in which CPU architectures the native code is compiled for, and (sometimes) which screen densities the included graphics target. Pick the one that matches your device for the smallest install size, or pick 'Universal' if you're unsure.