Monostr is a free and open-source Android app for using Nostr, a decentralized social network, with one unique feature: it allows users to send Monero (XMR) tips to other users. It is available on F-Droid, the Android open-source software repository, under the AGPL-3.0 license or superior. https://f-droid.org/packages/com.monostr.app/
