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.