# Sudoku Flow - Increase Focus — Improve memory & concentration

> Classic Sudoku puzzle game to improve focus and memory. (iPhone/iPad app by Michael Lippold.)

- Source: https://appshunter.io/ios/app/sudoku-flow-increase-focus/id1512460299 (this page in markdown: same URL + `.md`)
- Developer: [Michael Lippold](https://appshunter.io/developer/1342969328)
- Category: Games, Entertainment, Casual, Puzzle
- Price: Free
- Rating: 4.50/5 from 33 App Store ratings · 3 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 23 MB
- Languages: American English
- Released: 2020-08-02
- Data updated: 2026-08-27
- Monetization: ad-supported
- User reviews in markdown: https://appshunter.io/ios/app/sudoku-flow-increase-focus/id1512460299/reviews.md

## What is Sudoku Flow?

Sudoku Flow provides loads of fun 9x9 Sudoku puzzles! Improve your focus and your working memory while challenging yourself with this number placing puzzle.

HOW TO PLAY
Fill the 9×9 grid with digits so that each row, column, and the nine 3×3 subgrids that compose the grid contain all of the digits from 1 to 9.

CHANGE DIFFICULTY
Choose different difficulty levels to find the right level of challenge for you.

TONS OF PUZZLES
With over 1000 puzzles, this simple, classic Sudoku game will challenge your concentration and provide endless fun.

SUDOKU FACTS
Did you know that modern Sudoku was developed in the U.S.A.? As far back as the late 19th century, there were different versions of Sudoku in Europe that allegedly led Indiana’s Howard Garns in 1979 to develop what was then called “Number Place”. In 1984, it was introduced in Japan where it is still generically known as Nambapuresu. Sudoku was the name used by the original newspaper that published the game in Japan.

## Key features

- 1000+ Sudoku puzzles
- Adjustable difficulty levels
- Improves focus and memory
- Classic 9x9 grid gameplay
- Number placing challenges

## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/sudoku-flow-increase-focus/id1512460299/reviews.md

### 1/5 — Not always right

*2025-03-25*

I have screen grabs that show that the numbers are wrong when they are actually right and even show it then change after.🤯

### 5/5 — Review

*2024-03-21, version 3.7*

This game has not much adds, and is very fun and engaging to play

### 5/5 — One of the best games ever

*2022-01-16, version 3.7*

It’s so a so addictive and I can stop playing it last night I stayed up till 4:00 am playing it and was almost late for work.

## Frequently asked questions about Sudoku Flow

### What is Sudoku Flow?

Sudoku Flow is a classic 9x9 Sudoku puzzle game designed to improve memory and concentration. It offers over 1000 puzzles with adjustable difficulty levels.

### How do you play Sudoku Flow?

The goal is to fill a 9x9 grid with digits so that each row, column, and 3x3 subgrid contains all digits from 1 to 9. The game provides the initial numbers to get you started.

### Can I change the difficulty in Sudoku Flow?

Yes, Sudoku Flow allows you to choose different difficulty levels. This ensures you can find the right challenge whether you are a beginner or an experienced player.

### Does Sudoku Flow have ads?

Yes, Sudoku Flow contains advertisements. It is a free-to-play game supported by ads.

### What devices is Sudoku Flow available on?

Sudoku Flow is available on iPhone, iPad, and iPod. It is designed for iOS devices.

### How often is Sudoku Flow updated?

The latest version of Sudoku Flow is 3.7, last updated on March 3, 2021. Updates typically include bug fixes and performance improvements.

### What is the age rating for Sudoku Flow?

Sudoku Flow has an age rating of 4+. This indicates it is suitable for children and adults alike.

### Is Sudoku Flow available offline?

The provided data does not specify if Sudoku Flow can be played offline. However, many puzzle games of this nature offer offline play.

## Version history (last 5 releases)

### 3.7 — 2021-03-03

Thanks to all those playing Sudoku Flow!

In this version, the following changes have been made:

- Modified how difficulty levels are rated - Easy, Medium, Hard are more similar to popular newspaper Sudoku puzzles. Very Hard and Extreme require more advanced solving techniques.

If you encounter issues or have feedback, please contact me: mike@beedots.app.

### 3.6 — 2021-02-23

Thanks to all those playing Sudoku Flow!

In this version, the following changes have been made:

- Added dark theme
- Added Settings drop down
- Moved Share, Like, and Feedback icons to Settings drop down

If you encounter issues or have feedback, please contact me: mike@beedots.app.

Happy puzzling!

### 3.5 — 2021-02-11

Added Karma points!
Added animation for completed numbers, rows, columns, and blocks.
Fixed leaderboard issue for extreme puzzles.

If you encounter issues or have feedback, please contact me: mike@beedots.app.

### 3.4 — 2021-02-05

Added Game Center leaderboards!
Some UI updates.

If you encounter issues or have feedback, please contact me: mike@beedots.app.

### 3.3 — 2021-01-28

Added daily notifications and sound ON/OFF button.

If you encounter issues or have feedback, please contact me: mike@beedots.app.

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## More apps by Michael Lippold

- [Bee Dots](https://appshunter.io/ios/app/bee-dots/id1433835184)
- [Word Search Classic Ultimate](https://appshunter.io/ios/app/word-search-classic-ultimate/id1472059843)
- [Fill-Ins·Word Fit Puzzle](https://appshunter.io/ios/app/fill-insword-fit-puzzle/id6755022319)

All apps by Michael Lippold: https://appshunter.io/developer/1342969328

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-27.*