Locate and control your device remotely
About this app
I lost my new phone. And because I don't use Google Services I couldn't locate it and my phone was gone for good. In the hope that this doesn't happen again, I developed this application, so that I can locate the phone via SMS.
Features:
- Locate the device (using GPS or cellular location) - Lock the device - Let the device ring - Take pictures with the device's camera to see its surroundings - Factory-reset the device
Usage:
You can control FMD (and thus your phone) either via SMS or via FMD Server. You send a command to the phone (e.g. "fmd ring") and the phone executes it.
For SMS you can either define a list of trusted contacts (phone numbers) that are allowed to send commands. Or you can set a PIN to allow anonymous usage. Then non-trusted phone numbers can also send commands by including the PIN in the message. This is useful because now if you lose your phone, you can ask a random person for help to wipe your phone remotely. If you simply text "fmd" to your phone FMD will reply with a text listing the available commands.
With FMD Server you get a web interface to send commands, to view the location of your device on a map, and to view pictures taken by the device. You can self-host FMD Server. For more details, see: https://gitlab.com/fmd-foss/fmd-server
Disclaimer:
This app is provided on a best effort basis. We hope it is useful, we use it ourselves, but this is a hobby project and we can't guarantee that it will work when you need it the most.
Licensed under GPL-3.0-only.
What's New in v0.16.1
Imported from the F-Droid repository index.
- 0.16.1:
- - Fix crash when migrating existing phone numbers to new access control (#426)
- - Show key fingerprint in FMD Server settings (!505)
- - Update dependencies
- 0.16.0:
- - Rework access control (#277):
Version history
Jun 26, 2026 · 6.2 MB · Android API 24–32 · code 43
Imported from the F-Droid repository index.
- 0.16.1:
- - Fix crash when migrating existing phone numbers to new access control (#426)
- - Show key fingerprint in FMD Server settings (!505)
- - Update dependencies
- 0.16.0:
- - Rework access control (#277):
SHA-256 6a884a52d62e7cc15c6ffcfe3a2bba1359b0866a6c4591e39d2f7dc3bbda7950
Jun 20, 2026 · 6.6 MB · Android API 24–32 · code 42
Imported from the F-Droid repository index.
- 0.16.0:
- - Rework access control (#277):
- - Ability to add multiple passwords, and separate for SMS and Notification Reply. Your FMD PIN is automatically migrated to the new format.
- - Ability to define which commands a given phone number/password/server is allowed to execute.
- - Show the phone numbers that are temporarily allowed via password access (#360).
- - Send Wi-Fi networks to BeaconDB (#406, #407).
SHA-256 53451e024f0f70fcef29fe69338b452a8802595dcd86178c2703a2cd1e5826e2
May 11, 2026 · 5.5 MB · Android API 24–32 · code 41
Imported from the F-Droid repository index.
- 0.15.0:
- - Settings exports can be encrypted (#411).
- - Update UnifiedPush library to 3.x (#394).
- This fixes push failing with Conversations (#404).
- - Better error message when FMD Server account was deleted via web interface (#396).
- - Internal refactoring
SHA-256 7a61dce19d4156b303f3458719e22839874b56e56fbf7b6d5373477ffa4275cd
Will it run on your device?
87%
- Runs on a broad range of modern Android versions.
- Multiple CPU architectures are covered.
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 de.nulide.findmydevice 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, 0.16.0 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall FMD 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 FMD, and a listing is removed when the evidence for it stops holding up.
Get FMD
Every source we list for de.nulide.findmydevice 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
6a884a52d62e7cc15c6ffcfe3a2bba1359b0866a6c4591e39d2f7dc3bbda7950
Signing certificate
87a6c136f5499db255c93f4d384cb1a5d314f6908f2bf197e0ec07ed58bb5872
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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