Time display for nerds: Unix, sidereal, binary clocks & more.
About this app
Epoch displays the current moment across a wide range of time systems — updating every second, all in one place.
WHAT EPOCH SHOWS YOU - Civil: date, time, day second, day percent — for any timezone worldwide - Technical: Unix time, International Atomic Time (TAI), GPS time - Astronomical: Greenwich Mean Sidereal Time, Julian Date, Modified Julian Date - Curiosities: Swatch Internet Time, three binary clock variants, Doomsday Clock
CONFIGURABLE Build your own display with Watchlist tabs — combine any values from any category, in any order. Set custom labels, reorder by drag-and-drop, swipe to remove.
DESIGNED FOR NIGHT USE Night mode displays red text on black — preserving your eyes' dark adaptation for stargazing.
PRIVACY FIRST No ads. No notifications. No tracking. No analytics. No network requests. All settings stored locally on your device. No permissions required.
Available in English and German.
Licensed under GPL-3.0-or-later, by RealEarthling.
What's New in v1.2.0
Imported from the F-Droid repository index.
- - Pin any timezone to always show summer or standard time, regardless of the current date
- - visual indicators for summer time/DST status (active/inactive) and pinned display mode
- - section headers and dividers for configurable tabs
- - automatic longitude detection for local sidereal time (LMST) is back
- - Export and import your settings as a file – useful for backups and sharing configurations
- - font improved for better readability
Version history
Jul 3, 2026 · 20.3 MB · Android API 24–36 · code 43
Imported from the F-Droid repository index.
- - Pin any timezone to always show summer or standard time, regardless of the current date
- - visual indicators for summer time/DST status (active/inactive) and pinned display mode
- - section headers and dividers for configurable tabs
- - automatic longitude detection for local sidereal time (LMST) is back
- - Export and import your settings as a file – useful for backups and sharing configurations
- - font improved for better readability
SHA-256 c163d5502514391a677c98aa3bc8454214dccc9ec952ada4c750204cf7a68768
Jul 3, 2026 · 19 MB · Android API 24–36 · code 42
Imported from the F-Droid repository index.
SHA-256 ac373f0cbe85b337e92faa9a288fe65cbac08379089a049bf4b75077f63debe0
Jul 3, 2026 · 16.7 MB · Android API 24–36 · code 41
Imported from the F-Droid repository index.
SHA-256 7b68669f1570436becb3ae762b4ad0c3363e02671c15ec1143104c06a6081b3b
Will it run on your device?
92%
- Runs on a broad range of modern Android versions.
- Multiple CPU architectures are covered.
- Aligned with the latest Android target SDK expectations.
Installation Guide
Open Settings on your Android device
Go to Security → Unknown sources (or Install unknown apps)
Enable "Allow from this source" for your browser or file manager
Open the downloaded APK file from your Downloads folder
Tap "Install" and wait for installation to complete
Launch the app from your home screen
Make sure to re-enable Unknown Sources restrictions after installation for security.
How to install this safely
How to verify the file you downloaded
Before you install anything, confirm the file is the one described here. On a computer, run shasum -a 256 your-download.apk (macOS or Linux) or certutil -hashfile your-download.apk SHA256 (Windows), then compare the output character-for-character with the SHA-256 on this page. If a single character differs, the file is not the build we recorded — delete it.
What the signing certificate proves
Every Android app is signed with a private key that only its developer holds. The fingerprint on this page is a hash of the matching public certificate, and it proves continuity rather than identity: it tells you a build came from whoever signed the earlier ones. Android enforces this at install time — if a package claiming to be io.github.RealEarthling.epoch is signed with a different key, the system will refuse to install it over your existing copy. A fingerprint that changes between releases is worth pausing on, because a repackaged app that has been modified by someone else cannot keep the original signature.
How to roll back to an earlier version
If the current release misbehaves, 1.2.0 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Epoch first — which clears its local data unless you have a backup. Reinstall the older APK only if its signing fingerprint matches the build you already trust, and check the API range: an older release may target an Android version your device has moved past.
Why we list sources instead of hosting everything
The official store channel is almost always the right choice: it updates automatically and carries the publisher's own distribution guarantees. A direct APK is useful when a device has no store access, when a rollout has not reached your region, or when you need a specific version — and only when the publisher has authorized that copy. APKBrowse does not list pirated, cracked, or unauthorized rebuilds of Epoch, and a listing is removed when the evidence for it stops holding up.
Get Epoch
Every source we list for io.github.RealEarthling.epoch is legality-reviewed. Pirated or cracked builds are never offered.
Other sources
F-Droid listing
officialF-Droid builds this app from source and signs it. This is its official listing, with older builds and full release notes.
Source code
verified publisherThe upstream repository this build is compiled from.
We check legality and signature continuity, but device behaviour still varies. Install at your own discretion.
App Information
Security Verification
We record provenance; we do not run malware scans. Verify the hash yourself before installing.
SHA-256 Hash
c163d5502514391a677c98aa3bc8454214dccc9ec952ada4c750204cf7a68768
Signing certificate
7263c0bfce95b625839598b01fdcc695c04cdbe6dd4fa34a02a2d3ad2522c246
Permissions Required
Previous Versions
The signing certificate fingerprint for this release is on record, so a build that does not match it did not come from this publisher.
Report a problem with this listing
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