Flat vs Zero Grid
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Flat
A minimalist 3D puzzle game where players move cubes into black holes to flatten the board. It offers 50 stages with increasing complexity and intuitive swipe controls for an immersive experience.
- 3D puzzle gameplay
- Minimalist design
- 50 challenging stages
- Intuitive swipe controls
- Progressive mechanics
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Flat is a 3D puzzle game where you slide cubes to make the board flat. ■ How to Play Swipe to slide the cubes into the holes on the board. Fill every hole to make the board flat and clear the stage. ■ 50 Stages As you progress, new gimmicks appear: one-way tiles, switches, breakable cubes, splitting tiles and more. ■ Daily Stage A new stage is added every day. You can also play past days from the calendar. ■ Show Answer If you get stuck, the solution plays automatically so you can see how to solve it. ■ Share When you clear a daily stage, you can share an image of the board and your move count.
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!
Screenshots
Verdict
The clearest difference is in-app purchases: Flat at none against Zero Grid's 1. Zero Grid's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 18.0). On price and ads 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. Flat asks for nothing beyond the download.
| Parameter | Flat | Zero Grid |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| Update frequency | Every 5 weeks | — |
| Ads | Yes | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported | — |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 18.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 103 MB | 141 MB |
| Age rating | 4+ | 4+ |
| Developer | masanao matsui | Yuki Tsuna |
In-app purchases
Flat
No in-app purchases
Zero Grid
- Remove Ads$0.99









