0h h1 4+

Q42 B.V.

Designed for iPad

    • 4.8 • 279 Ratings
    • Free
    • Offers In-App Purchases



0h h1 is a little logic game that follows three simple rules:

- Three red tiles or three blue tiles next to each other in a row or column isn't allowed
- A full row or column must have as many blue tiles as it has red ones.
- No two rows are the same. No two columns either.

Simply tap a tile to make it red or blue and complete the grid.
0h h1 gives you unlimited puzzles for all four grid sizes:

4 x 4
6 x 6
8 x 8
10 x 10

0h h1 is free, without ads, without social network requirements, without locked features and without nag screens. 0h h1 is a little gift to you. We hope you enjoy it.

0h h1 can also be played on 0hh1.com.

What’s New

Version 1.3.5

This app has been updated by Apple to display the Apple Watch app icon.

Updated for iOS11.

Ratings and Reviews

4.8 out of 5
279 Ratings

279 Ratings

RetroLobster ,

A simply great time.

This game is very interesting, fun, and designed so simplistically and yet is so visually appealing. Aside from a few issues it's one of the best puzzle apps I've ever played.

One issue is it doesn't always save my in progress sessions if I even put the app running in the background and only sometimes retains it. And never keeps it if I outright close the app.

The second issue is sometimes to figure out the next move, you need to compare a completed line with one that has two blank spots, but on the higher difficulties it can be an eye strain to maintain that observational stare. I suggest being able to press a button that lets you dim everything but two rows/columns and select the ones you want to focus on/light up. That's just one possibility, but any way of making it easier on my eyes would be greatly appreciated.

I also wanted to thank the devs for not putting ads in this, even though it's free. I will absolutely put some money down for this later when I am able to.

And on one final note. I wanted to say that making the hints free is really great. I struggled to understand the finer details and nuances of the game at first but after using the hints enough I quickly figured out many of the things I was doing wrong and became a much better player for it. So I am also deeply appreciative for there being no micro-transactions and thus no pressure put on me to buy them for the hints.

hbesok ,

A hidden gem.

This game is so fun yet so simplistic. The storage optimization is phenomenal and gameplay-wise, this is really smooth!

The gameplay is really fun with 5 different sizes of grids. The 3 given rules are easily memorizable and enough to solve the puzzle, and you feel very good when you solve a large grid.

With not even 5 megabytes, basically anyone can get this game. The storage is very low and a good game for people with near full storage.

This game is very visually appealing as well. The designs are simple, sleek and easy to see what’s going on. The color schemes go really well together and overall are very nice.

I’d have to give this a solid 10/10. Simple yet nice colors, great storage optimization and solid gameplay. If your into puzzle games, I would strongly suggest this app. Great job, developers!

maddawg2016_ ,

Truly amazing

I’ve been playing this game for years — always a pleasure to rediscover it on my Home Screen. I love the challenge and relaxation. I will say — I’m high up on several leaderboards and being beat out by those with negative times. Not sure how they managed that. I’d love for those scores to be blocked from the leaderboards as it’s physically impossible to do something in a negative amount of time.

App Privacy

The developer, Q42 B.V., has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


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