The excellent Mastodon/PeerTube/Pleroma app Mastalab has changed its name to "Fedilab", to reflect that it works on many Fediverse services.
Fedilab is available through Google Play and @fdroidorg
The new site is at:
Their Fediverse account remains the same though, it's still at:
(It's also due to get PixelFed support soon.)