Found by static analysis of the app package; bundled is not the same as active. All SDKs →
Update history
2.0.7Sep 11, 2026 · seen Oct 6, 2026
A locked line can be unlocked again.<br><br>Holding a completed line's target locks the whole line. Nothing used to undo that — and a line can be right on its own while the rest of the board cannot live with it, which left the grid looking unsolvable. The same hold now frees the line, and the board's "?" explains both.<br><br>Thanks to the player who reported it.<br><br>— The Rul
Only the current version so far — new entries appear as the game ships updates.
Trailer
Rullo: Math Logic Puzzle is a nonogram / logic game by Akkad with 1,000,000+ downloads (about 1.7M estimated). +20 installs in the last 7 days. Rated 4.0 from 8.4K ratings. Released Mar 14, 2017. Install growth, rank history, SDKs and ad networks.
From the store listing: “Every row and every column has a target. Switch numbers off until each line adds up to it. Easy to learn, and it will keep you thinking.
FOUR WAYS TO PLAY
Classic — Four operations, four sizes
Endless — One grid after another
Expert — Mixed operators in every cell
Beat the Clock — Your best time to beat
LEADERBOARDS…”
Trailer
