ReLabs is an unofficial, FOSS client for XDA (a.k.a XDA Developers) written in Kotlin and JetPack Compose and is licensed under Apache2.0.
Support for ReLabs is strictly on XDA (a.k.a XDA Developers). Discussions related to development and feature requests are also welcome on the same thread.
Translations are on crowdin. New languages can be requested on the support thread.
XDA underwent couple of major migrations during 2021-2022 that changed how the website and forums behaved (references below).
The new XDA Forums is now based upon XenForo which has a public REST API documentation. This migration was carried out by Audentio who implemented tons of custom API endpoints as well as a completely new OAuth2 login support that is not part of XenForo (Reference) and this is not publicly documented.
This app uses OAuth2 endpoints and parameters extracted from the official app to allow users to login and uses the XenForo API to allow them to interact with XDA Forums. Custom API endpoints will be used where possible.
Support for XDA Portal is also present using the RSS Feed that was made public in one of the reference links above.