ECHO-GRIDs - Number Puzzle
wapon Inc. Games iPhoneiPadiPod touch
ECHO-GRIDs - Number Puzzle is a free Games app for iPhone and iPad by wapon Inc. Requires iOS 15.0. Updated July 23, 2026.
- Price
- Free
- on the App Store
- Size
- 101 MB
- Age 4+
- Updated
- Jul 23
- 2026 · v1.0.0
Screenshots
About ECHO-GRIDs - Number Puzzle
Every digit you place echoes across the board. ECHO GRID is a fresh kind of logic puzzle about reading the ripples. Place digits 1-3 on a 5x5 board. Each digit sends an echo up, down, left and right, traveling as far as its own value and adding that value to every cell it passes through. Match the target sum of every row and column to clear the stage! SIMPLE TO LEARN, DEEP TO MASTER - One rule: place digits. You'll get it in a minute - A single digit affects several rows and columns at once - plan ahead - Every puzzle has exactly one solution. Pure logic, no guessing SPECIAL CELLS CHANGE EVERYTHING - Walls block echoes - Mirrors bend them 90 degrees - Amplifiers add +1 to passing echoes The same 5x5 board feels completely different with each combination. PLENTY TO PLAY - 100 stages, stepping up from basics to walls, mirrors, amplifiers and beyond - No locks - jump straight to any stage you like - A Daily Challenge shared by players worldwide, with streaks and lifetime stats THINK AT YOUR OWN PACE - Long-press any cell to see exactly which echoes reach it and from where - Stuck? A hint corrects just one cell - Calm neon visuals and soft, soothing sound PERFECT FOR - Fans of sudoku-style and logic puzzles - Short brain workouts on your commute - Quiet, focused play before bed - works offline Available in English and Japanese. Listen to the echoes. One digit changes the whole board.
App privacy
The developer, wapon Inc., reported these privacy practices to Apple.
Data Not Collected
The developer does not collect any data from this app.
Alternatives to ECHO-GRIDs - Number Puzzle
Looking for apps like ECHO-GRIDs - Number Puzzle? Here are 6 similar apps on the App Store. The highest rated is Teach the Thief (5.0/5), and all 6 are free to download.
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| App | Rating | Price | Last updated |
|---|---|---|---|
| ECHO-GRIDs - Number Puzzle | – | Free | July 23, 2026 |
| Nockturn: Mirror Logic Puzzle | – | Free | Sep 15, 2026 |
| Noctagram – Nonogram Puzzles | – | Free | Aug 9, 2026 |
| LayerArt | – | Free | Aug 27, 2026 |
| Teach the Thief | 5.0 / 5 (1) | Free | Sep 11, 2026 |
| Tendril Puzzles | – | Free | Sep 27, 2026 |
| Foldku - Fold to 1 | – | Free | Sep 3, 2026 |