Simple Mobile apps have been very popular among FOSS enthusiasts. I've personally been using the Gallery, Contacts and the Phone app since a few years now. It's a shame that it has come to this, will be on the lookout for their forks.
Yeah, I was REALLY pissed off that the guy sold his app to this shitty company. Now this. I didn't use the simple apps but I've heard of them since I was a pretty big f droid user.
They must give a lot of money to devs in exchange for ruining their work lol