# SAGAK: Shikaku Logic Puzzle — Daily puzzles, lasting stamps > Daily puzzles, lasting stamps (iPhone/iPad app by JIN EUNJA.) - Source: https://appshunter.io/ios/app/sagak-shikaku-logic-puzzle/id6809531957 (this page in markdown: same URL + `.md`) - Developer: [JIN EUNJA](https://appshunter.io/developer/6809402474) - Category: Games, Puzzle - Price: Free - Age rating: 12+ - Requires: iOS 15.0 · 57 MB - Languages: American English, Dutch, French (France), German (Germany), Indonesian, Italian, Japanese, Korean, Persian, Polish and 7 more - Released: 2026-09-09 - Data updated: 2026-10-19 ## What is SAGAK? Turn numbers into rectangles, and solved puzzles into stamps. SAGAK brings Shikaku to a paper-and-pencil world. What is Shikaku? Divide the entire grid into rectangles without gaps or overlaps. Each rectangle contains one number, and its area in cells equals that number. One number, one rectangle. Cell count equals the number. One sheet a day. Pencil lines drawn on paper. The reason, not the answer. Techniques taught one step at a time. Solve it, keep the stamp. One postmark. That is the whole celebration. A month of stamps. An empty day is not failure — it is a space left. 12 notebooks, 240 puzzles. Solve 16 of 20 puzzles to open the next notebook. Dark after hours. Light · Dark · Follow system. Solo play works without an account or internet connection. Solo progress and stamps stay on your device. Online play requires a connection and separate consent. An anonymous account, nickname, flag, rating and match records are stored on the server and can be erased in Settings. Solo play has no time limit. Online matches compare completion times on the same puzzle and have a time limit. Some detailed content in additional languages falls back to English. ## Is SAGAK safe? Not enough ratings yet to assess SAGAK. ## Is SAGAK legit? SAGAK: Shikaku Logic Puzzle appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for SAGAK is 65 out of 100 points across 7 verification signals from App Store and developer data. ## Version history (last 5 releases) ### 1.1.0 — 2026-10-18 Online play is here. Solve the same puzzle in real time. See your match result, rating change and the global leaderboard. Challenge friends with room codes and replay a match in five seconds. We’ve also refined phone and tablet layouts and improved stability. ### 1.0.4 — 2026-10-07 • Improved iPad layouts and the placement of game controls. • Larger stamps on completion and Codex screens, with clipping fixed. ### 1.0.3 — 2026-09-27 Smoother transitions from completed puzzles to stamps. Achievements now appear with a sound after the stamp animation finishes. Fixed achievements unlocking during the tutorial and duplicate counting of replayed Free play puzzles. Loading appears only when needed. Its animation and progress bar finish together, then the puzzle opens immediately. Share your stamp and play record together in one neatly arranged image. ### 1.0.1 — 2026-09-15 • Smoother puzzle preparation with a colorful drawing animation and a fluid progress bar. • Better spacing on stamp and achievement details. • A consistent postmark design for every completed puzzle, including past daily puzzles. ### 1.0 — 2026-09-10 No release notes. ## Apps similar to SAGAK | App | Rating | Price | Category | | --- | --- | --- | --- | | [BlownPhrases](https://appshunter.io/ios/app/blownphrases/id6809201589) | 5.0 (1) | Free | Games | | [KASCADE: Chain Puzzle](https://appshunter.io/ios/app/kascade-chain-puzzle/id6812043387) | — | Free | Games | | [One Cut: Split the Shape](https://appshunter.io/ios/app/one-cut-split-the-shape/id6813180906) | — | Free | Games | | [Stone Maze : Quest Escape](https://appshunter.io/ios/app/stone-maze-quest-escape/id6811329727) | — | Free | Games | | [Fill the Jar: Shape Puzzle](https://appshunter.io/ios/app/fill-the-jar-shape-puzzle/id6813074285) | — | Free | Games | | [Maze3D Rush](https://appshunter.io/ios/app/maze3d-rush/id6808972463) | — | Free | Games | ## More apps by JIN EUNJA - [Mongle: 16 Personality Types](https://appshunter.io/ios/app/mongle-16-personality-types/id6809419426) - [Ongle: HWP·HWPX Viewer, PDF](https://appshunter.io/ios/app/ongle-hwphwpx-viewer-pdf/id6809517375) - [Sudoku Voyage: Logic Puzzles](https://appshunter.io/ios/app/sudoku-voyage-logic-puzzles/id6809524435) - [Nonogram Trip: Logic Puzzles](https://appshunter.io/ios/app/nonogram-trip-logic-puzzles/id6814582503) - [Phone Cleaner: Reclaim space](https://appshunter.io/ios/app/phone-cleaner-reclaim-space/id6815222629) All apps by JIN EUNJA: https://appshunter.io/developer/6809402474 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-19.*