0h h1

Name: 0h h1
Rating: 4.7 (302 reviews)
Author: Q42 B.V.

By: Q42 B.V.

Puzzle

Features & Capabilities

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.

User Growth & Download Statistics

App Games Entertainment

By:

Q42 B.V.

Rating:

4.70

(302)

Version:

1.3.5 Last updated: 2017-10-21

Version code:

841483355

Creation date:

2014-11-12

Compatible devices:

Size:

2.83MB

URLs:

Website

Full description:

Source:

Apple Apps Store

Data ingested on:

2026-06-07

Compare stats and ranking:

Ranking

# 96,290 ▼ 98

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

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Developed by:

Q42 B.V.

Apple Apps Store

https://apps.apple.com/us/app/0h-h1/id936504196

Website:

http://0hh1.com

User Reviews

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.

Recent reviews

Honestly my primary praise is that there are no ads, in app purchases, energy, or anything like that. It’s just a simple puzzle game but it’s still challenging at the same time

by TT*****, 2025-12-29

I love that it gives you hints when you get stuck. Easy to learn yet challenging to master. Great little brain tickler and alternative to mindless scrolling.