Unified Attestation is a free, open-source alternative to Google Play Integrity. It delivers short-lived integrity tokens signed by a single backend, verified offline by app servers, & issued via a privileged Android system service. It can live alongside Play Integrity, & it’s simple to integrate for app developers on both the app and server sides.
An initiative by Volla Systeme GmbH.
https://uattest.net/ && https://github.com/unifiedAttestation