A simple BLE pulse meter (HRM - heart rate monitor) app.
About this app
Does everything you could dream of about such an app: - Follows android color scheme (Dark, Light) - Shows pulse and time since start. - May even show the charge left on the BLE device.
Licensed under GPL-3.0-or-later.
What's New in v7
Imported from the F-Droid repository index.
Version history
May 17, 2024 · 39.4 MB · Android API 28–30 · code 7
Imported from the F-Droid repository index.
SHA-256 352bf105c8cc67700df94ce03ba61b3b79ed874005f7666e4a1b4ef0921a263a
May 14, 2024 · 39.4 MB · Android API 28–30 · code 6
Imported from the F-Droid repository index.
SHA-256 56239fbf3c6d02d8eb83b2d71522b88d9263b29759ea67b4d5fb6c53d3141eb4
Apr 6, 2024 · 31.7 MB · Android API 28–30 · code 4
Imported from the F-Droid repository index.
SHA-256 5f6da7c4da5d32c39ad609e298709f36c6ff75522b75071d9d6106207cf1a24c
Will it run on your device?
55%
- Targets newer Android builds, so legacy devices may be excluded.
- 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 ds.pulsar 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, 1.5 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Pulsar 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 Pulsar, and a listing is removed when the evidence for it stops holding up.
Get Pulsar
Every source we list for ds.pulsar 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
352bf105c8cc67700df94ce03ba61b3b79ed874005f7666e4a1b4ef0921a263a
Signing certificate
82a99778c94d2a6b43a55840ee450c4a03d3f34007ac1025400fa04fcf9acc25
Permissions Required
What each permission lets Pulsar do. A highlighted one is worth a second look — not necessarily wrong, just worth asking whether this app needs it.
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.
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