---
title: "9 digits - sudoku variations - Reviews, Revenue and Downloads in United States | Apple App Store"
description: "Play 4 brain teasing logic games - Sudoku | Killer Sudoku | MathDoku | X-Sudoku - with thousands of puzzles.  Don't get stuck - 9 digits' helpers guide your next move and teach you solution strategies"
---

# 9 digits - sudoku variations — United States
> 4 brain teasing logic games

![9 digits App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple115/v4/18/10/c7/1810c78d-bbb6-a15c-8c55-b6bda61f911d/AppIcon-0-1x_U007emarketing-0-7-0-85-220.png/400x400bb.png)

**Developer:** [Marcus Wagner](https://apptail.io/developer/marcus-wagner-hpxc) (Germany)
**Category:** Games
**Rating:** 5.0/5 (17 ratings)
**Price:** Free
**Bundle ID:** de.wintermute.ndigits
**Store:** Apple App Store
**Country:** United States
**Version:** 1.4.1 (released 2021-06-13)
**Original Release:** 2011-07-14

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id432770625)
**AppTail Page:** [https://apptail.io/app/9-digits-sudoku-variations-Hdyg/united-states](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/united-states)

## 9 digits Description
Play 4 brain teasing logic games - Sudoku | Killer Sudoku | MathDoku | X-Sudoku - with thousands of puzzles.

Don't get stuck - 9 digits' helpers guide your next move and teach you solution strategies.

• choose levels from beginner to master
• easily enter digits and pencil marks
• get step-by-step hints for your next move
• unique solutions, no guessing needed
• plenty of settings to tweak your game experience
• no ads

9 digits was created by Ivonne & Marcus who love to play logic games.

## 9 digits Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/Purple113/v4/06/9c/d0/069cd0c6-8a5a-1899-13c6-e2bc94b2c2ef/mzl.rcazavyq.png/640x960.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/Purple123/v4/3d/28/6a/3d286a81-76ce-4aaa-1937-c54a38a44fe6/mzl.mjrcjnrv.png/640x960.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/Purple113/v4/fa/7d/f2/fa7df269-d9ec-2317-23b0-96add928327a/mzl.agenmkly.png/640x960.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/Purple113/v4/ea/b4/31/eab43148-cf40-8b5c-fe3e-288ad534c1aa/mzl.uskonmua.png/640x960.png)

## 9 digits Rating Breakdown in United States
- 5 stars: 17 (100%)
- 4 stars: 0 (0%)
- 3 stars: 0 (0%)
- 2 stars: 0 (0%)
- 1 stars: 0 (0%)

## 9 digits Reviews in United States

### ***** "Genius interface"
The best user interface I have ever seen in a Sudoku game. The use of color and position to stimulate additional parts of the brain is a great plus
-- mwvermillion, 2018-07-02

### ***** "Love this game!"
I love love love puzzles and I've never found another game that's so thoroughly challenging and logical in nature. It's a shame it isn't more popular!
-- Umizoomi101, 2018-05-05

### ***** "Already love it"
Looks much more fun and colorful than most sudoku apps and has a good selection of games and an intuitive pencil mark interface
-- Lilu666, 2016-02-20

### ***** "Add support for iPad please!"
Nice app otherwise.
-- Spn Guy, 2016-01-08

### ***** "Best Sudoku App, by far"
This is a real tool for players that are serious about Sudoku. There are many many puzzles at many skill levels. The amazing, amazing hint system actually teaches you how to play better. The app is super smooth and responsive at all times. No competition.
-- lookwhatihavefound, 2015-10-17

### ***** "Excellent sudoku"
Took a bit to get used to putting numbers in cells. Very much worth it. Great sudoku game. My favorite
-- I41cu2, 2015-01-05

### ***** "Awesome!"
I love this app. It is well organized, easy to use and extremely addicting
-- 9digiter, 2013-10-11

### ***** "well-crafted puzzles"
This deserves to be more popular! Lots of puzzles in the App Store are computer-generated, but you can tell these are handmade. Excellent! Interface is clean and professional. Optional hints for those who like, and those who don't can shut the hint system off.

This is the best KenKen I've found so far. It's nice to have Killer Sudoku included also.

I hope that a future release might include larger KenKen (up to 9 by 9 would be super, and fitting with the "9 digits" name) and maybe a re-skin choice. I can see why Mr. Wagner went for colored digits, but I usually prefer a black-on-white scheme.

Update: I bought several of the extra puzzle packs when they cost a few dollars. Well worth it. Now that the dev has generously made them free, this app gives you a large number of really nice puzzles. Very kind!
-- SH in WI, 2013-03-23

### ***** "Best number game app!"
Love this app. So many different variations on sudoku plus the ken-ken ones. Difficulty is definitely more challenging then other similar app's. That killer sudoku can really give a headache thinking so hard!
-- greenleesh, 2012-09-12

### ***** "Fantastic"
One of the best sudoku apps out there, and it's free! It really should be more popular.
-- Cute Lil monster!, 2012-04-28

[View all 9 digits reviews and detailed analytics on AppTail](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=reviews)



## 9 digits Discovered Keywords
- a-wagn
- 9 digits
- sudoku variations

## Apps Similar to 9 digits
- [Fantastic Sudoku Variants](https://apptail.io/app/fantastic-sudoku-variants-GAeb/united-states)
- [Sudoku: Classic & Variations](https://apptail.io/app/sudoku-classic-variations-nCIb/united-states)
- [Super Sudoku - Brainstorming!!](https://apptail.io/app/super-sudoku-brainstorming-ABIc/united-states)
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- [Killer Sudoku X - Brain Puzzle](https://apptail.io/app/killer-sudoku-x-brain-puzzle-mGDd/united-states)
- [All Sudoku - 5 kinds of sudoku](https://apptail.io/app/all-sudoku-5-kinds-of-sudoku-kJtg/united-states)
- [Killer Sudoku - number game](https://apptail.io/app/killer-sudoku-number-game-meug/united-states)
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## 9 digits Available In
- [United States](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/united-states)
- [Germany](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/germany)
- [France](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/france)
- [China](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/china)
- [United Kingdom](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/united-kingdom)
- [Australia](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/australia)
- [Switzerland](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/switzerland)
- [India](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/india)
- [New Zealand](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/new-zealand)
- [Israel](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/israel)
- [Vietnam](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/vietnam)
- [Brazil](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/brazil)
- [Japan](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/japan)
- [South Korea](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/south-korea)
- [Romania](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/romania)
- [Sweden](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/sweden)
- [Canada](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/canada)
- [Netherlands](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/netherlands)
- [Estonia](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/estonia)
- [Hong Kong SAR China](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/hong-kong)
- [Indonesia](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/indonesia)
- [Ireland](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/ireland)
- [Italy](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/italy)
- [Kuwait](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/kuwait)
- [Kazakhstan](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/kazakhstan)
- [Lebanon](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/lebanon)
- [Mexico](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/mexico)
- [Malaysia](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/malaysia)
- [Nigeria](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/nigeria)
- [Norway](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/norway)
- [Nepal](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/nepal)
- [Peru](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/peru)
- [Philippines](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/philippines)
- [Pakistan](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/pakistan)
- [Poland](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/poland)
- [Portugal](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/portugal)
- [Russia](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/russia)
- [Saudi Arabia](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/saudi-arabia)
- [Singapore](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/singapore)
- [Slovenia](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/slovenia)
- [Slovakia](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/slovakia)
- [Thailand](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/thailand)
- [Tunisia](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/tunisia)
- [Türkiye](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/turkey)
- [Taiwan](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/taiwan)
- [Ukraine](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/ukraine)
- [Uzbekistan](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/uzbekistan)
- [United Arab Emirates](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/united-arab-emirates)
- [South Africa](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/south-africa)
- [Armenia](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/armenia)
- [Argentina](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/argentina)
- [Austria](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/austria)
- [Azerbaijan](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/azerbaijan)
- [Belgium](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/belgium)
- [Bahrain](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/bahrain)
- [Belarus](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/belarus)
- [Chile](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/chile)
- [Colombia](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/colombia)
- [Czechia](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/czechia)
- [Denmark](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/denmark)
- [Dominican Republic](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/dominican-republic)
- [Algeria](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/algeria)
- [Ecuador](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/ecuador)
- [Egypt](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/egypt)
- [Spain](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/spain)
- [Finland](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/finland)
- [Greece](https://apptail.io/app/9-digits-sudoku-variations-Hdyg/greece)

---

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