SPAYD Decoder

Native Android app that decodes Czech SPAYD (Short Payment Descriptor)
payment QR codes. Works fully offline; no data leaves the device.

Features:

* Scan QR codes with the camera
* Share images or text into the app via the system Share Sheet
(gallery, screenshots, browser)
* Pick an image from storage
* Open spayd: URIs
* Parser derives the Czech account number from the IBAN
* One-tap copy for every field
* Material 3 with dynamic colors (Android 12+) and dark mode

Built on CameraX and zxing-cpp for QR decoding — no proprietary Google
dependencies.