KardHall

Twenty-one card games, solo against the computer: ten trick-taking games — belote, coinche, tarot, barbu, rummy, bridge, president, bourré, hearts, skat — and eleven solitaires, from Klondike to Sid Sackson's Bowling.

Full rules, not trimmed-down versions: declarations and belote-rebelote are called automatically, tarot counts its bouts and handfuls, coinche knows the surcoinche, bridge lays its dummy face up. Four difficulty levels, from beginner to expert, where the bots count played cards and deduce what is left.

Eleven of the twenty-one games are played without paying anything; the free version asks for a connection and shows an advert between games. A single purchase — no subscription, no currency — opens the other ten, removes every advert and all tracking, and makes the app usable with no connection. No account, either way.