A geocaching add-on – generates waypoints from formulas with up to 2 variables
About this app
Coordinate Joker is a geocaching add-on for application Locus Map, but works also with other apps that can display waypoints from a gpx, kml, or kmz file.
Finally you made it to the pre-final after 3 hours and several miles. A final number to be determined: Count the planks of the bridge ... Hey, where has the bridge gone?! It was replaced by a pipe beneath the ground. What now ...? Look up the logs for potential telephone jokers? No, then I'd rather draw a line in my map, where the final could be located given the formula and missing x ... But wait - Coordinate Joker will do it for you. Just enter the coordinate formulas and it will send the resulting waypoints to your preferred Geocaching app. With a bit of luck, one point will appear close to some path while the others may be far away. Then where would you look for the final? :)
Licensed under GPL-3.0-or-later.
What's New in v1.4.42
Imported from the F-Droid repository index.
- Version 1.4.42:
- - Improvement: library updates and targeting Android 16
Version history
Nov 10, 2025 · 2.8 MB · Android API 23–36 · code 42
Imported from the F-Droid repository index.
- Version 1.4.42:
- - Improvement: library updates and targeting Android 16
SHA-256 b4e15899412e73074c23fe375a6f1ea17aa49b105a4543223f858abe75a83f4c
Apr 22, 2025 · 2.9 MB · Android API 21–35 · code 41
Imported from the F-Droid repository index.
- Version 1.4.41:
- - Improvement: Startup example without projection such that it cannot be forgotten to set it to 0
SHA-256 0472e215d3b77f53edc04152ff3307154cbe251cab3b2bc7da8349582f3ef650
Jan 24, 2025 · 2.9 MB · Android API 21–35 · code 40
Imported from the F-Droid repository index.
- Version 1.4.40:
- - Bugfix: Version string broken (only F-Droid affected)
SHA-256 0e317443dfa38884a235b72991ae632645cc977ad4e00afc050ef9863d660c3c
Will it run on your device?
78%
- Runs on a broad range of modern Android versions.
- ABI coverage is focused on newer 64-bit devices.
- 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
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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.github.siggel.coordinatejoker 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, 1.4.41 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Coordinate Joker 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 Coordinate Joker, and a listing is removed when the evidence for it stops holding up.
Get Coordinate Joker
Every source we list for com.github.siggel.coordinatejoker 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
b4e15899412e73074c23fe375a6f1ea17aa49b105a4543223f858abe75a83f4c
Signing certificate
a6817992f8498a452186175fd44ef0a32c621aa43c9c138daf61de25a7f8937a
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.
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