Simple PDF Wallet for your most important PDFs
About this app
An app that is fully open source. This app is a simple to use PDF Wallet. That means it takes over the task of storing and displaying your most important PDF certificates. It includes a convenient fullscreen barcode rendering, if a barcode is present in the PDF.
Brief Instruction - Open "PDF Wallet" - Import PDF - Done
Alternative Brief Instruction - Go to your file browser, email, web browser or PDF reader app - Open/Share the PDF with "PDF Wallet" - Done
Description A very simple app that does nothing more than conveniently store and display PDF certificates. You can use it for public transport tickets, bills, contracts, certificates and any other PDF file. The PDF file has to be imported into the app. Following that, the barcode is displayed in fullscreen, as well as the PDF document itself. That's already it.
Currently supported barcode formats are: - Matrix (2D) codes: QR, Aztec, DataMatrix and PDF417 - Linear (1D) codes: UPC-A, UPC-E, EAN-8, EAN-13, CODE-39, CODE-93, CODE-128, ITF and Codabar
More Features - Can detect and extract barcodes in PDFs - (Optional) fingerprint authentication - PDFs can be individually sorted and named - PDFs can be opened - PDFs can be shared from other apps - PDFs can be shared with other apps (indirectly allows printing) - Dark Mode support (document stays in original color) - Also supports password protected PDFs - Two different layouts to choose from
The "Pro" version additionally brings (requires In-App Purchase): - Removes "Get Pro" banner on various screens - Assign tags to documents - Filter documents by tags - Option to invert document colors in dark mode - Option to force dark or light theme by overriding system settings - Option to show barcodes in half size
Privacy This app values your privacy by being fully open source and working offline. No ads, no tracking.
Issues This is a free-time project of a single developer. Therefore please understand that replies can take a little while.
Licensed under GPL-3.0-only, by Michael Troger.
What's New in v5.1.4
Imported from the F-Droid repository index.
- - Improved search results view
Version history
Mar 15, 2026 · 14 MB · Android API 23–36 · code 79
Imported from the F-Droid repository index.
- - Improved search results view
SHA-256 5c8e788703690fc07e44cde5ff3cb1006e8d102a60f75a8b7d096b6db8893e88
Mar 9, 2026 · 14 MB · Android API 23–36 · code 78
Imported from the F-Droid repository index.
- - Fix rare app crash during PDF import
- - Add new footer to More and Settings screens
SHA-256 d1c48e41d1c4b5f363ee15b7795f151035eb28fbc6d3afb2a87c4ee8fa68ebe4
Mar 9, 2026 · 13.5 MB · Android API 23–36 · code 77
Imported from the F-Droid repository index.
- - Improve switching of layout
- - Add Korean, Japanese, Russian and Arabic
SHA-256 0eef7a7db633742d687e73e26d8ac3285cd892262b10a3b98bfb72219c512988
Will it run on your device?
92%
- Runs on a broad range of modern Android versions.
- Multiple CPU architectures are covered.
- 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
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.michaeltroger.gruenerpass 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, 5.1.3 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall PDF Wallet 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 PDF Wallet, and a listing is removed when the evidence for it stops holding up.
Get PDF Wallet
Every source we list for com.michaeltroger.gruenerpass 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
5c8e788703690fc07e44cde5ff3cb1006e8d102a60f75a8b7d096b6db8893e88
Signing certificate
d5f3025c70ecd948f932f5681eef2b9d787caeca573c4825382a7320f9c2933a
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.