Modstack

Release notes and version history.

Version 1.0August 28, 2026

Initial App Store release for iPhone and iPad.
36 handcrafted circuits across six chapters, Mirror and Repeat tile stacking, ordered relays, switches and gates, and a deterministic Daily Circuit.
The Foundations chapter and Easy Daily Circuit are free; a one-time $3.99 Full Game Unlock opens the remaining 30 circuits plus Medium and Hard Daily.
No ads, subscription, account, tracking, or internet connection required for play.