Free
In-App Purchases
Rating summary
About
SUM is a quiet puzzle game about seeing mathematical relationships.
Move, compare and arrange mathematical pieces until the idea behind each puzzle becomes clear. There are no timers, scores, streaks or advertisements — only space to look, notice and understand.
Explore the first two sets for free. Unlock Premium once to continue through the complete collection of puzzles and mathematical cards.
Show more
What's New in SUM
1.0.8
October 1, 2026
This update refreshes SUM’s App Store presentation and discoverability. Gameplay is unchanged.
1
Subscriptions & In-App Purchases
$3.99
SUM Premium
Unlock all puzzles with one purchase.





