# 0h h1 vs Puzzle IO

The clearest difference is ads: 0h h1 at none against Puzzle IO's shown. 0h h1 also leads on monetization model (free vs free with in-app purchases) and review sentiment (91% vs 74%). Puzzle IO's advantage is update cadence (every 3 weeks vs every 3 months). On price, rating, ratings volume and in-app purchases there is nothing between them.

Both are free to download. 0h h1 sells 1 one-off in-app purchase and Puzzle IO sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.7 for 0h h1 against 4.6 for Puzzle IO. Both are backed by a comparable volume of ratings — 303 and 362 respectively. Written reviews are what separate them: 91% of 0h h1's written reviews are positive against 74% of Puzzle IO's.

0h h1 ships an update every 3 months, Puzzle IO every 3 weeks. The most recent releases landed on October 24, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | 0h h1 | Puzzle IO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (303 ratings)](https://appshunter.io/ios/app/0h-h1/id936504196/reviews)** | [4.6 (362 ratings)](https://appshunter.io/ios/app/puzzle-io-binary-sudoku/id1145765167/reviews) |
| Number of ratings | 303 | **362** |
| Positive reviews | **90.7% of reviews** | 74.3% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 3 MB | 107 MB |
| Requires iOS | **8.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Q42](https://appshunter.io/developer/385525157) | [99 Up Games](https://appshunter.io/developer/567396068) |

## What reviewers say

### 0h h1

[App page](https://appshunter.io/ios/app/0h-h1/id936504196)

This logic puzzle game challenges you to fill a grid with red and blue tiles based on three simple rules. It offers unlimited puzzles across four grid sizes, providing a brain-teasing experience without ads or in-app purchases.

**Highlights:** Tile-based logic puzzles, Three simple rules, Unlimited puzzles, Four grid sizes (4x4 to 10x10), Tap to change tile color

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 0h h1 Supporter | $0.99 | one-time |

**What reviewers like**

- ✨ No ads or in-app purchases
- 🧠 Challenging yet simple gameplay
- 💡 Helpful hints provided
- 🧠 Great for focus and ADHD
- 👍 Long-term player satisfaction

**What reviewers complain about**

- ⚠️ Clipboard access prompt
- 🐛 Progress sometimes lost on closing app
- 🐛 Leaderboard scores appear impossible (negative times)
- 🐛 Hints sometimes incorrect or unhelpful
- 🐛 Start game over option missing

**Reported bugs**

- Progress forfeited when closing app
- Randomly asks permission to paste from clipboard
- Leaderboard scores with negative times
- Hints sometimes incorrect or unhelpful
- Error display not reliable after update

**Requested features**

- Continue game progress after closing app
- In-game stats (games played, best times, scores)
- Option to start game over
- Option to highlight and erase incorrect cells
- Customizable color palettes


### Puzzle IO

[App page](https://appshunter.io/ios/app/puzzle-io-binary-sudoku/id1145765167)

Experience a modern, fast-paced logic puzzle game based on binary Sudoku. Fill grids with 0s and 1s following specific rules, earn bonuses with a smart point system, and compete globally. Offers endless challenges across six difficulty levels.

**Highlights:** Fill 10x10 grids with 0s and 1s, Equal 0s and 1s per row/column, No three identical numbers in a row, Smart point system with bonuses, Time-based multipliers for higher scores, Game Center support and global leaderboards, Six difficulty levels, Unlimited unique puzzles

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |

**What reviewers like**

- 👍 Simple mechanics
- 👍 Easy to play one-handed
- 👍 Different difficulty modes
- 👍 Guess function if you're not sure of your options
- 👍 Fun and requires the right level of brain power while not being too difficult

**What reviewers complain about**

- 🐛 Hint function is not very useful
- 🐛 'Watch video' for hints doesn't work on the paid ad-free version
- 🔋 High battery consumption
- 💸 Too many ads and long ad breaks
- 🐛 Incorrect error detection on completed rows/columns

**Reported bugs**

- Incorrect error detection on completed rows/columns
- Frequent crashes and bugs
- Game sometimes freezes or becomes unresponsive
- Ads not loading properly, preventing gameplay

**Requested features**

- Dark mode option
- Better hint system that explains the logic
- Option to turn off row/column completion notifications
- More challenging puzzle levels
- Ability to create and save custom puzzles


## Frequently asked questions

### Is 0h h1 free?

0h h1 is free to download, with in-app purchases available.

### Is Puzzle IO free?

Puzzle IO is free to download, with in-app purchases available.

### Which has better reviews, 0h h1 or Puzzle IO?

0h h1 is rated higher. 0h h1 averages 4.7 out of 5 from 303 ratings, while Puzzle IO averages 4.6 from 362 ratings.

### Do 0h h1 or Puzzle IO have ads?

Puzzle IO shows ads; 0h h1 does not.

### Which is updated more often, 0h h1 or Puzzle IO?

0h h1 ships an update every 3 months, and Puzzle IO every 3 weeks. Most recently, 0h h1 was updated on October 24, 2026 and Puzzle IO on October 23, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*