Zero Grid vs Shrimp & Crab
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Zero Grid
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A simple math puzzle that anyone can pick up and play. Easy to start, hard to put down. Use the number in the center to calculate each tile and turn all numbers into “0”. Start with simple puzzles using subtraction. As you progress, addition, multiplication, and division are introduced, making the puzzles deeper and more strategic. Drag across tiles to connect and select them in one stroke. Choosing the right steps and operations is the key to solving each puzzle. Clear stages from Level 1 to 200 in order. After clearing Level 40, the “Puzzle Generator” is unlocked, allowing you to create and play unlimited custom puzzles. Features • Simple and intuitive controls • Operations increase with difficulty (− → + → × → ÷) • Satisfying one-stroke drag gameplay • Strategic, brain-teasing puzzles • 200 challenging stages • Unlock the puzzle generator • Perfect for short play sessions Play now and experience the fun of puzzles!
Shrimp & Crab
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EbiKani is a tiny no-text reaction game made with numbers, symbols, and emoji. The rule is simple: look at the current rule, then sort the emoji as fast as you can. Seafood / Golden / Bakery / Snacks Now featuring: * 30s / 60s / Endless game modes * Sound ON/OFF toggle * Instant retry with the same rule set * Improved hit and miss feedback Added Game Center leaderboards for every theme and game mode. Participation is optional; you can still play offline.
Screenshots
Verdict
The clearest difference is in-app purchases: Shrimp & Crab at none against Zero Grid's 1. Shrimp & Crab also leads on ads (none vs shown). Zero Grid's advantage is iOS requirement (15.0 vs 17.0). On price and device support there is nothing between them.
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. Zero Grid sells 1 one-off in-app purchase. Shrimp & Crab asks for nothing beyond the download.
| Parameter | Zero Grid | Shrimp & Crab |
|---|---|---|
| Price | Free | Free |
| Update frequency | — | Fortnightly |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 141 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Yuki Tsuna | Eri Takemiya |
In-app purchases
Zero Grid
- Remove Ads$0.99
Shrimp & Crab
No in-app purchases









