Converting rational numbers between different bases and representations
About this app
Qonvert lets you convert rational numbers between different bases and between different representations such as positional notation and improper, mixed, continued and Egyptian fractions, as well as Roman and Greek numerals. The numbers can have basically arbitrary size and precision.
Licensed under GPL-3.0-only, by Anypodetos.
What's New in v1.8.0
Imported from the F-Droid repository index.
- Supports bases up to ±280 (standard) and ±259 (balanced) including base phi; new digit input method; new musical intervals; minor improvements and bugfixes
Version history
Apr 10, 2023 · 5.1 MB · Android API 16–33 · code 12
Imported from the F-Droid repository index.
- Supports bases up to ±280 (standard) and ±259 (balanced) including base phi; new digit input method; new musical intervals; minor improvements and bugfixes
SHA-256 47aa63678fae9a7f4d8e111ca263c5a53716e3eef2938556317d5beaae611c11
Jan 9, 2023 · 4.9 MB · Android API 16–33 · code 11
Imported from the F-Droid repository index.
- Digits outside the range 0…9 can now be dissected into their decimal representations; three additional keyboard layouts; bugfixes
SHA-256 60f91eba80f686400f134e023e0c13434599931eaa7ab7b40e4479818e9d966c
Dec 26, 2022 · 4.9 MB · Android API 16–33 · code 10
Imported from the F-Droid repository index.
- Supports the golden ratio base and bases up to ±100; new functionality to count digits; the keyboard now includes fraction characters; and many minor improvements
SHA-256 822e16934bcf7e9f6ba9d8e530c3650e1b04f1516d3d37be62937ce98948244f
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 org.tessoft.qonvert 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, 1.7.1 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Qonvert 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 Qonvert, and a listing is removed when the evidence for it stops holding up.
Get Qonvert
Every source we list for org.tessoft.qonvert 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
47aa63678fae9a7f4d8e111ca263c5a53716e3eef2938556317d5beaae611c11
Signing certificate
98dd05dcef0c29f2af694535a0fb75e55261feff69b89da2faeb7123908a4f48
Permissions Required
What each permission lets Qonvert 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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