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PaperCript

GitHub javimentallab/papercript

Install PaperCript

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QR code for zapstore.dev/download
  • Scan the code with your phone’s camera
  • Tap Download anyway if the browser warns about the file
  • Allow your browser to install unknown apps if Android asks
  • Open Zapstore and finish the onboarding

Open PaperCript in Zapstore

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QR code to open PaperCript in Zapstore
  • Scan the code to open PaperCript in Zapstore, or search for it there
  • Tap Install, and Download if Zapstore asks you to confirm the developer
  • Confirm in Android’s install dialog. Allow Zapstore to install unknown apps if Android asks

Unclaimed app

The catalog lists PaperCript from GitHub javimentallab/papercript and signs its releases. The developer has not claimed it. The file is still checked before you install it.

Are you the developer? Cryptographically prove you hold the key that signs it.

How trust works

The app stores your passwords on paper, encrypted. You encrypt a password with your master password, the app turns it into a card with a QR code, and you print an A4 sheet of cut-out cards. To get a password back, you scan its QR and type the master password.

PaperCript stores your passwords on paper, encrypted. You encrypt a password with your master password, the app turns it into a card with a QR code, and you print an A4 sheet of cut-out cards. To get a password back, you scan its QR and type the master password. Losing the paper costs you nothing: a card is worthless without the master password. Keep them in a drawer, split them up, or leave a copy at a friend's place.

  • scrypt key derivation, AES-256 + HMAC-SHA256 (encrypt-then-MAC)

  • No network permission: the app cannot open a socket

  • Stores nothing: no passwords, no master password, no history

  • No screenshots (FLAG_SECURE), sensitive clipboard cleared automatically

  • Built-in password generator

  • QR codes read with ZXing, no proprietary libraries

Available in English, Spanish, Catalan, Galician, Basque, Portuguese, French, German, Italian, Dutch, Polish, Russian, Ukrainian, Chinese, Japanese, Korean, Thai and Hindi.

Summary generated by Zapstore from source.

Original description, as the developer published it.

Zap PaperCript

Zapping anonymously. Sign in to zap with your identity.

No developer has verified this app yet, so sats go to npub1gnwq4…thdn3y, the catalog that brought it to you.

Amount in sats

Latest release

Nov 9, 2026

Unclaimed app No Google servicesWorks offlineSource available · MIT

The catalog lists this app from GitHub javimentallab/papercript and signs its releases. The developer has not claimed it. Are you the developer? Claim your app

Uses the camera to scan QR codes. Data stays on the phone.

Permissions

  • Camera CAMERA Take photos and record video CAMERA

Release notes

Updated privacy policy. No other change in how the app works.

APK signed by the developer; reproducible build, identical to the one F-Droid builds from this tag.

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Get PaperCript the private way

Updates checked on your device, and every release verified before it installs.

Get Zapstore for Android

  1. Tap Download APK below.Scan the code with your Android phone’s camera.
  2. If Android asks, allow your browser to install unknown apps.
  3. Open Zapstore and finish the onboarding.
Download APK

v2.0.4 · 71.2 MB · Android 10+

Verify the download

On a computer, run shasum -a 256 <the file you downloaded>. It should print: b13e01319fecf0b3ba1fd60132758bd0fa08a235836c52d44fddb412cf1b7137

If you have zsp, Zapstore’s publishing tool, zsp utils extract-apk <the file you downloaded> works too. Its hash should be the same SHA-256: b13e01319fecf0b3ba1fd60132758bd0fa08a235836c52d44fddb412cf1b7137

On the phone, AppVerifier should show this signing certificate: 99e33b0c2d07e75fcd9df7e40e886646ff667e3aa6648e1a1160b036cf2b9320

Source code All releases and notes

Get zsp

  1. Download the file for your computer.
  2. Make it executable and put it on your PATH.
  3. In your project folder, run zsp.

Have Go? This does the same:

go install github.com/zapstore/zsp/v2/cmd/zsp@latest
macOS, Apple silicon Linux, x86-64 Linux, arm64

v2.0.1 · macOS and Linux

Verify the download

On your computer, run shasum -a 256 <the file you downloaded>. It should print the SHA-256 for the one you chose.

macOS, Apple silicon · 18.6 MB 99018fb9744e5ace2b44557550dc333496239912c0e9b1137266d4922c803346

Linux, x86-64 · 23.8 MB 1ef5373f8ecd9ba63d2c3fab98abb0d31b2244a2aac31b3749fb205c7d5f5b38

Linux, arm64 · 22.1 MB e421005ee47cba58293dce4277bb784e4cfe706dbbcb8617d671629d0238be18

Source code All releases and notes