Split secrets into QR-code shards using Shamir's Secret Sharing
About this app
Banana Split uses Shamir's Secret Sharing to split secrets into QR-code shards. Any majority of shards can reconstruct the secret — fewer reveal nothing.
How it works
1. Enter your secret (e.g., a seed phrase, private key, password). 2. Choose how many shards to create and how many are required to reconstruct. 3. Use the auto-generated passphrase or enter your own. 4. Banana Split encrypts the secret with the passphrase, then splits the ciphertext into N QR codes using Shamir's scheme. 5. Print or save the QR codes. Write the passphrase by hand on every sheet.
To reconstruct: scan a majority of QR code shards, enter the passphrase, and your secret is restored.
Features
• Offline — all cryptography happens on-device, no server communication • Save shards as PNGs or PDF with full Unicode font support • Camera and gallery QR scanning with multi-file import • Custom or auto-generated passphrases • User-selectable quorum (how many shards needed) • 7 languages: English, Russian, Turkish, Belarusian, Georgian, Ukrainian, Polish • Cross-platform shard compatibility with the Banana Split web app
Security
Encryption: scrypt key derivation + NaCl secretbox (XSalsa20-Poly1305). Splitting: Shamir's Secret Sharing over GF(256). No data collection, no analytics, no trackers.
Web App
Also available as a web app — no installation needed: https://nfcarchiver.com/banana/ Shards created in the app and web version are fully compatible.
Open Source
This app is a fork of banana_split by Parity Technologies, licensed under GPLv3. Source code: https://github.com/mezinster/banana_split
Licensed under GPL-3.0-only, by mezinster.
What's New in v0.8.3
Imported from the F-Droid repository index.
- • FOSS camera scanner for F-Droid — no more Google ML Kit dependency
- • Fix camera activating at app launch instead of only on the Restore tab
- • Move fastlane metadata to repo root
Version history
Apr 9, 2026 · 27.8 MB · Android API 21–34 · code 3
Imported from the F-Droid repository index.
- • FOSS camera scanner for F-Droid — no more Google ML Kit dependency
- • Fix camera activating at app launch instead of only on the Restore tab
- • Move fastlane metadata to repo root
SHA-256 bd7121efddfa4aa52a31ed3f21d42deca0762f4f94cda019958390d1ceaf93ee
Apr 8, 2026 · 27.8 MB · Android API 21–34 · code 2
Imported from the F-Droid repository index.
- • F-Droid preparation — metadata, screenshots, and build recipe
- • Fork attribution and source code link on About screen
- • Fix scanner state reset on "Start Over"
- • Localization fixes and fastlane metadata for all 7 languages
SHA-256 d96958d263650c2348f62051eb352aa5402a523575d5304d51e90ac9f2bddff3
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 com.nfcarchiver.banana_split 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, 0.8.2 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Banana Split 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 Banana Split, and a listing is removed when the evidence for it stops holding up.
Get Banana Split
Every source we list for com.nfcarchiver.banana_split 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
bd7121efddfa4aa52a31ed3f21d42deca0762f4f94cda019958390d1ceaf93ee
Signing certificate
376729f4725c0637a42c0dc98be7cdd65c283b379c3c903f875dfb096fc6d002
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.