[laurentlb]

Nice project!

As it was not clear from the description, there's a one-time payment (4.29€) to get more than 7 puzzles in a day.

Lichess also offers a good alternative to this, although their offline support is limited.

[zikduruqe]

> offline support is limited.

You are limited to 50 puzzles when off the network, and when you reconnect, the next 50 (or the delta between how many you played and 50) are redownloaded.

[deepdarkforest]

CT-ART 4.0 is the gold standard. Again, not fully free, but it has some very instructional features, like playing against alternate moves, solving mini versions of a puzzle, playing the opposite side etc. Used it for years.

[scotty79]

To be fair you shouldn't be sitting in the bathroom for that long because you'll develop hemorrhoids.

[reaperducer]

To be fair you shouldn't be sitting in the bathroom for that long because you'll develop hemorrhoids.

Maybe he's really good at chess?

(Unlike my former co-worker who would monopolize the one men's room stall for two hours at a stretch doing chess puzzles on his phone, and I'd have to go to the IT building. Gross.)

[eru]

Just use a standing potty?

[jaredhallen]

TacticMaster on F Droid seems to have all the same features for free.

[avadhesh18]

A great app no doubt but the descriptive hints on OffChess and a different rating system set OffChess apart from TacticMaster.

[watwut]

ChessKing has some stuff availabke only after payment, but has pretty good thematical collections.