Displays fine particulate matter values from the https://luftdaten.info project.
About this app
The OK Lab Stuttgart has a project to build fine particulate matter sensors by yourself. The data can then be sent to the database of https://luftdaten.info. This app shows you data from this network. It is not necessary to operate an own sensor to use this app.
Currently supported sensor types are: SDS011, SDS021, HPM, DHT11, DHT22, HTU21D, BME280 (temperature & humidity only)
Besides the main application, this app also provides three widgets:
• A small widget that takes minimum space and displays the most current data as text.
• A large widget that displays the most current data and draws charts for fine particulate matter, temperature and humidity.
• A large widget that displays the particulate matter concentrations from the sensors around you.
This app requires Android 4.4 to run.
You can find a short manual and the privacy policy here: https://codeberg.org/Starfish/Feinstaubwidget/wiki
Licensed under GPL-3.0-or-later, by Pawel Dube.
What's New in v0.78
Imported from the F-Droid repository index.
- - added monochrome app icon to support app icon theming
Version history
May 17, 2024 · 0.5 MB · Android API 19–33 · code 34
Imported from the F-Droid repository index.
- - added monochrome app icon to support app icon theming
SHA-256 0249e0aca4191b65f7727a08e5f41b5676f00c4cab7ce131c03fc01cf82f3dbd
Mar 13, 2024 · 0.5 MB · Android API 19–33 · code 33
Imported from the F-Droid repository index.
- - improved widget layouts
- - widgets are now displayed correctly immediately after a reboot
- - improved and faster loading of data when using the app
- - the widget showing close stations now properly asks for the permissions needed
SHA-256 c5ad6181f8ba37762086e3e3c7f5adf53aeea1ac38ea738b89bd2aaf494a517d
Jan 5, 2022 · 0.5 MB · Android API 19–29 · code 32
Imported from the F-Droid repository index.
- - reworked internal thread logic, removed asyncTask
- - sharing does not need READ_EXTERNAL_STORAGE & WRITE_EXTERNAL_STORAGE permissions anymore
- - removed option to save image with values (use share instead)
- - new, adaptive app icon
SHA-256 3d161a69f2321e3f5b18f2b6646178e7dc070e052d2022e21a809cef4c6f8788
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 de.kaffeemitkoffein.feinstaubwidget 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, 0.77 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall FeinstaubWidget 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 FeinstaubWidget, and a listing is removed when the evidence for it stops holding up.
Get FeinstaubWidget
Every source we list for de.kaffeemitkoffein.feinstaubwidget 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
0249e0aca4191b65f7727a08e5f41b5676f00c4cab7ce131c03fc01cf82f3dbd
Signing certificate
a5fed4e95118a62dd4fef2058c31987c7ae3e9c6586b67e878ff6e86ed7789e8
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.
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.