# 0h h1

> Puzzle

Canonical page: [https://chrome-stats.com/d/id936504196](https://chrome-stats.com/d/id936504196)

## Overview

- **ID:** `id936504196`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Q42 B.V.
- **Category:** Puzzle
- **Rating:** 4.70 / 5 (302 ratings)
- **Version:** 1.3.5
- **Last updated:** 2017-10-21
- **First published:** 2014-11-12
- **Size:** 2.83 MB
- **Data as of:** 2026-09-06
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/0h-h1/id936504196)
- **Website:** [http://0hh1.com](http://0hh1.com/)

## Description

0h h1 is a tiny logic puzzle game built around three simple rules: no three red tiles or three blue tiles next to each other in a row or column; a full row or column must have as many blue tiles as red ones; and no two rows are the same. Tap a tile to flip it red or blue and work toward a valid grid.

Choose from four grid sizes (4x4, 6x6, 8x8, 10x10) with unlimited puzzles. 0h h1 is free, ad-free, with no social requirements or nag screens. You can also play at 0hh1.com.

## Rankings

- #88,548 — Overall

## Review summary

0h h1 provides a clean, ad-free puzzle experience with hundreds of puzzles, helpful hints, and a lightweight, relaxing design. It’s easy to learn, highly replayable, and kind to focus concerns and ADHD. The game’s small footprint and lack of distractions make it great for listening to audiobooks while solving puzzles. However, several reviewers warn about clipboard access and paste prompts that appear during use, sometimes without an active copy action, raising privacy concerns. If the clipboard issue is addressed, the game would be a stronger, low-stress long-term puzzle companion.

### Pros

- Ad-free with no ads or in-app purchases; free to play.
- Helpful hints that assist when stuck; easy to learn but challenging to master.
- Huge variety of puzzles with multiple grid sizes; hundreds of levels.
- Very small footprint / storage-efficient; runs well on devices with limited storage.
- Relaxing, calming gameplay that works well with audiobooks and helps focus (ADHD).

### Cons

- Repeated prompts to paste from clipboard and read clipboard data without explicit action, raising privacy concerns.

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Source: [Chrome-Stats](https://chrome-stats.com/d/id936504196)