This comes straight from Sum Stacker’s own GitHub page, and it’s free. Need help installing?
About this app
Sum Stacker is a minimalist number puzzle game. Drag positive and negative blocks onto three piles until all three piles add up to the same sum.
It comes with 100 hand-crafted levels and a star-rating system that rewards solving each puzzle in the fewest moves. Everything works fully offline.
From the app’s home page
- See the codeHow it’s made, every line is public
- Questions & commentsTalk with the people who make it
- Report a problemTell the makers something is broken
- All versionsOlder downloads and what changed
- LicenseThe rules for using and sharing it
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