https://t.me/easyqrscanbot
(source: https://github.com/MBoretto/easy-qr-scan-bot/commit/f71fef02dbecb4372c104f63868001d62f9b006b)

@easyqrscanbot - a Mini App that allows you to scan QR codes from Telegram. Users can scan QR codes making it a breeze to retrieve information, access websites, view contact details, or perform various actions associated with the scanned code. @easyqrscanbot keeps a history of previously scanned QR codes, making it easy for users to revisit scanned content.

Nice, though I’d like to see a more native-like theme.

Not a bad bot. I like how it syncs QR codes between devices via CloudStorage. The theme seems not to have adapted much to the app, but it is functional.