Calculate heart rate from camera image
About this app
Simple way to estimate the heart rate. Please do not use it for medical purposes !
This utility works by covering the flash as well as the device's camera with a finger, and waiting for 10 seconds. It works best when the person stays still, and the environment is dark.
The phone analyzes the amount of red captured by the camera, and attempts to calculate the heart rate based on the subtle changes it detects.
During the measurement, the application shows the current calculation results, and shows the captured data on a line chart.
Once completed, the following further details are shown:
• Standardized values, along with their timestamp (the values are scaled between 0 and 1, and a rolling average is applied for smoothing)
• Timings where a new heart beat is detected.
These data can be shared with other application in order to be exported.
Licensed under ISC, by Bálint Erdősi.
What's New in v1.3.0
Imported from the F-Droid repository index.
- * Spanish translation - thanks @sguinetti!
- * Bengali translation - thanks @Oymate!
- * Tooling update - thanks @carldea!
- * New measurement button on main screen
- * Bugfixes - thanks @dreamsyntax, @yuhuitech!
Version history
Oct 12, 2021 · 1.5 MB · Android API 21–30 · code 5
Imported from the F-Droid repository index.
- * Spanish translation - thanks @sguinetti!
- * Bengali translation - thanks @Oymate!
- * Tooling update - thanks @carldea!
- * New measurement button on main screen
- * Bugfixes - thanks @dreamsyntax, @yuhuitech!
SHA-256 39a4a5ee296054d1b58c3b9cc3bf4c8e4b59bbd210ac49b7bcb1aea0d64fc0da
May 23, 2021 · 1.6 MB · Android API 21–30 · code 3
Imported from the F-Droid repository index.
- * Translations: Chinese, Dutch, Hungarian
- * Dark mode support (default setting)
- * Fix crash when there are no camera devices available
SHA-256 7b3a342617a860ee2667cdbf55ea2b494d75fcfd49fc2c4179310b5c8d980d1c
Apr 14, 2021 · 3.3 MB · Android API 21–30 · code 2
Imported from the F-Droid repository index.
SHA-256 9509f85495d6d08854ce9890c94cdd3dfb6f27fd9a3615814709d114a84f8262
Will it run on your device?
73%
- Runs on a broad range of modern Android versions.
- ABI coverage is focused on newer 64-bit devices.
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 eu.berdosi.app.heartbeat 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 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall HeartBeat 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 HeartBeat, and a listing is removed when the evidence for it stops holding up.
Get HeartBeat
Every source we list for eu.berdosi.app.heartbeat 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
39a4a5ee296054d1b58c3b9cc3bf4c8e4b59bbd210ac49b7bcb1aea0d64fc0da
Signing certificate
c83197dd15571b01bb523d143a218e1fee55a3eadb6a3ca8477c04c24554ecbe
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
A listing is only as good as its corrections. If a source is broken, a signature looks wrong, or this app should not be here, tell the moderation team.