Hertz contact is for ball-on-flat static mechanical contact calculation.
About this app
Hertz contact application provides calculation on static mechanical ball-on-flat contact using materials properties.
Licensed under GPL-3.0-only, by MLKYH.
What's New in v2.4
Imported from the F-Droid repository index.
- Suppress double icon problem
Version history
Jun 2, 2023 · 1.5 MB · Android API 16–32 · code 6
Imported from the F-Droid repository index.
- Suppress double icon problem
SHA-256 b84ef9011e0e9f982ba1e8133a9ad896f2f19e7161b380746e0e94faa33ec538
Mar 29, 2022 · 1.5 MB · Android API 16–32 · code 5
Imported from the F-Droid repository index.
- - Dark theme
- - New design
SHA-256 35318913f78069623aa0c8cdfee6d8ad039e03b0e26835be779164284dd08a1c
Mar 24, 2022 · 1.5 MB · Android API 16–32 · code 4
Imported from the F-Droid repository index.
- - Bug in calculation fixed
SHA-256 5d1903c3c4f0b1195e0ddf220d708f5c216ab37cc5eb3a2896985b9a8eca21c4
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 com.mlkyh.hertz 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, 2.3 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Hertz contact 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 Hertz contact, and a listing is removed when the evidence for it stops holding up.
Get Hertz contact
Every source we list for com.mlkyh.hertz 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
b84ef9011e0e9f982ba1e8133a9ad896f2f19e7161b380746e0e94faa33ec538
Signing certificate
9b9109eaa152f824cc0109a471d18afc2371129da44b186750c352de925a4924
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.