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0h h1

0h h1

by Q42 B.V.

299 ratings
74 reviews
🎮 Games
📚 Education
🎲 Board
🧩 Puzzle
Free
In-App Purchases

Details

  • Released
  • Updated
  • November 12, 2014
  • October 21, 2017

Features

Developer

Q42 B.V.
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iphone
ipad
🧾$0.99
In-App Purchase↘︎
📌Ready
Reviews summary↘︎
⭐74
Reviews↘︎
📝2+ tags
Tags↘︎
🔄6+ apps
Alternatives↘︎
🏆3 achievements
Achievements↘︎
❓5 answered
FAQ↘︎
📦w/o updates
Updates frequency↘︎
🖼️Get Icon
Icons↘︎

About

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.

✓Tile-based logic puzzles
✓Three simple rules
✓Unlimited puzzles
✓Four grid sizes (4x4 to 10x10)
✓Tap to change tile color
Show original description

What users say

Summarized from real user reviews of 0h h1. Based on 299 reviews and a 4.7/5 average, it highlights the 37 positives and 20 negatives reviewers mention most about this game.

Positive things

  • ✨No ads or in-app purchases
  • 🧠Challenging yet simple gameplay
  • 💡Helpful hints provided
  • 🧠Great for focus and ADHD
  • 👍Long-term player satisfaction
  • 💯Minimalist and appealing design
  • 🚀Smooth gameplay
  • 💡Unique and genius concept
  • 😌Relaxing and decompressing
  • 🆓Free to play
  • 💡Supports audiobooks well
  • 💡Low storage usage
  • 💡Visually appealing
  • 💡No required sound components
  • 💡No reading required
  • 💡Can be paused and resumed
  • 💡No time component
  • 💡Ideal for college lectures
  • 💡Recommended for ADHD clients
  • 💡Addictive without being time-consuming
  • 💡No guessing involved
  • 💡Never frustrating
  • 💡Minimalist design
  • 💡Logical brain-picking
  • 💡Simple yet deep gameplay
  • 💡Elegant and entertaining
  • 💡Quick and fun bursts
  • 💡Easy to learn
  • 💡Tricky to master
  • 💡Great for short breaks
  • 💡Deceptively simple
  • 💡No gamification elements
  • 💡Great logic puzzle
  • 💡No gimmicks
  • 💡Good for spare moments
  • 💡Beautiful aesthetics
  • 💡Well-built code

Negative things

  • ⚠️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
  • 🐛Highlight and erase incorrect cells missing
  • 🐛Start time too long for quick play
  • 🐛Error display not reliable after update
  • 🐛Difficulty can become too easy over time
  • 🐛No sound effects
  • 🐛No background soundtrack
  • 🐛No iCloud syncing for scores
  • 🐛No leaderboards
  • 🐛No timers
  • 🐛No penalty for hints
  • 🐛Difficulty could be increased
  • 🐛No paid version for support
  • 🐛No new levels
  • 🐛Some find it too easy/mechanical
  • 🐛Needs iPad for larger grids (big fingers)
See all reviews

What's New in 0h h1

1.3.5

October 21, 2017

This app has been updated by Apple to display the Apple Watch app icon. Updated for iOS11.

More
1

In-App Purchases

$0.99

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User reviews

Most RecentHighest RatedLowest Rated

Simple and Fun

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
TT101.5TT101.5

super fun and challenging

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.
SilverElement135SilverElement135

Try it

So satisfying, had this game for many years now. Love it
leomarssleomarss

Great game!

I am totally hooked to this app! Focusing is hard for me and this helps me a lot!
arigedoarigedo

Objetivo e direto

Amo
Mares AntigosMares Antigos
See 69 more reviews

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User experience

🐞

Reported Bugs

6 issues

Progress forfeited when closing app

Bug

Randomly asks permission to paste from clipboard

Bug

Leaderboard scores with negative times

Bug

Hints sometimes incorrect or unhelpful

Bug

Error display not reliable after update

Bug

Occasional crashes (implied by 'buggy')

Bug
✨

Requested Features

13 requests

Continue game progress after closing app

Feature

In-game stats (games played, best times, scores)

Feature

Option to start game over

Feature

Option to highlight and erase incorrect cells

Feature

Customizable color palettes

Feature

iCloud syncing of scores

Feature

More difficulty settings or games

Feature

Timed version for scoring

Feature

Holiday themes

Feature

Sound effects for clicks

Feature

Background soundtrack

Feature

Bigger maps/grids (e.g., 12x12)

Feature

Integration with Game Center

Feature

FAQ

What is 0h h1?

0h h1 is a logic puzzle game where you fill a grid with red and blue tiles. The game follows three core rules: no three same-colored tiles in a row or column, an equal number of red and blue tiles in each row and column, and no duplicate rows or columns.

What are the key features of 0h h1?

The app offers unlimited puzzles across four grid sizes (4x4, 6x6, 8x8, and 10x10). Players simply tap tiles to change their color (red or blue) to complete the grid according to the game's rules.

Is 0h h1 free to play?

Yes, 0h h1 is completely free to play. It is offered as a gift with no ads, no social network requirements, no locked features, and no nag screens.

What devices is 0h h1 compatible with?

While the description doesn't specify exact operating systems, it implies mobile compatibility. The game can also be played on the web at 0hh1.com, suggesting broad accessibility.

What are common use cases for 0h h1?

This app is ideal for quick brain training sessions, passing time during commutes, or engaging in a mentally stimulating challenge. Its simple rules and unlimited puzzles make it suitable for both casual play and dedicated puzzle enthusiasts.