An MmpApps original solitaire game with the no-nonsense card game interface.
Totally free. No in-app purchases.
Going through the deck one card at-a-time you place cards onto four stacks. Stacks are suited and build down... but not necessarily consecutive (so an 8 can take a 7 or lower but only if they are of the same suit).
Sounds hard but very rich in strategy!! There are two variations:
EASY: You get to cycle the reserve deck twice.
HARDER: You only get to cycle the reserve deck once.