ECHO vs Shynoku
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
ECHO
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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.
Shynoku
Engage in a relaxing block-placing puzzle experience. Arrange falling blocks to clear lines and achieve high scores. Enjoy a simple yet challenging gameplay loop perfect for quick sessions.
- Block placing puzzle
- Line clearing gameplay
- High score challenges
- Relaxing experience
- Simple controls
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A block placing puzzle game
Screenshots
Verdict
ECHO and Shynoku are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | ECHO | Shynoku |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (4 ratings) — better |
| Number of ratings | — | 4 — better |
| Update frequency | — | Every 8 days |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 101 MB | 48 MB |
| Age rating | 4+ | 4+ |
| Developer | wapon Inc. | Jason Kochan |
In-app purchases
ECHO
No in-app purchases
Shynoku
No in-app purchases









