# Brain Train Sudoku : BTS — Best Puzzle Ever

> Free Sudoku puzzle game with over 10,000 levels and helpful gameplay tools. (iPhone/iPad app by FunnyPack Inc..)

- Source: https://appshunter.io/ios/app/brain-train-sudoku-bts/id1326693057 (this page in markdown: same URL + `.md`)
- Developer: [FunnyPack Inc.](https://appshunter.io/developer/1215132088)
- Category: Games, Entertainment, Board, Puzzle
- Price: Free with in-app purchases
- Rating: 4.00/5 from 4 App Store ratings · 4 written reviews indexed
- Age rating: 4+
- Requires: iOS 9.0 · 107 MB
- Languages: American English, Japanese, Korean, Chinese (Simplified, China), Chinese (Traditional, Taiwan)
- Released: 2018-01-04
- Data updated: 2026-07-08
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/brain-train-sudoku-bts/id1326693057/reviews.md

## What is Brain Train Sudoku?

Over 10000 free sudoku puzzles
Super Simple and Super Convenience but Super Addictive!
BTS is the best Sudoku game in your life.

◆ What's Sudoku?
Sudoku, also called Number place, is one of the most popular puzzles.
The rules are so simple that you can get started easily.

◆ Brain Train Sudoku : BTS
Cool and clear graphics using eye-friendly colors.
Keep playing Sudoku, your character will grow up!
Become a god of sudoku by solve sudoku every day!

◆ Simple & Convenience
Auto Save - Auto save anytime during the play
Note - Try writing the expected answers
Quick Note - Switch to Note mode by double-touching the cell
Auto Note Erase - The numbers used are automatically deleted from the note
Duplicate Detector - Find numbers already in use by other cells
Undo - You can undo all your play history
Restart - Replay the sudoku puzzle you are currently playing
Leaderboard - Competition with users around the world
Statistic - Analyze my information including average completion time

◆ Difficulty
BASIC
EASY
NORMAL
HARD
EXTREME
The level of difficulty to enjoy from beginner to Sudoku master

◆ Offline Play
Play anywhere without an internet connection

※ When you delete an app from your device, app data will be deleted.

## Key features

- Over 10,000 free Sudoku puzzles
- Auto-save and note-taking features
- Multiple difficulty levels
- Offline play support
- Global leaderboards
- Play statistics

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| 5 hints | $0.99 | one-time |
| 15 hints | $1.99 | one-time |
| Unlimited hints | $4.99 | one-time |
| Remove Ads | $1.99 | one-time |


## Recent user reviews (4 of 4)

All indexed reviews: https://appshunter.io/ios/app/brain-train-sudoku-bts/id1326693057/reviews.md

### 5/5 — 이게 낫네요

*2024-02-27, version 1.0.2*

원래 이거 하다가 좀 쉬운 거 같아서
다른 스도쿠로 갈아탔습니다. 더 어렵길래 이거 해야지 했는데 하다가 광고가 나오네요...;;
그래서 다시 왔습니다... 역시 이게 낫네요

### 1/5 — DO NOT GET

*2020-04-14*

this is horrible I only had it for 20 minutes then I deleted it!

### 5/5 — Amazing

*2018-06-22*

It’s an amazing app and that’s all to say about it it’s cute and the character are adorable <3

### 5/5 — 광고가 너무 많다는것만 빼면

*2018-03-08, version 1.0.2*

미션도 있고 순위도 있고 너무 재밌어요~!! 광고없는 유료화 나와도 좋을것 같아요 ㅠㅠ

## Frequently asked questions about Brain Train Sudoku

### Does Brain Train Sudoku have ads?

No, Brain Train Sudoku does not contain advertisements. It offers a completely ad-free experience for uninterrupted gameplay.

### Can I play Brain Train Sudoku offline?

Yes, Brain Train Sudoku supports offline play. You can enjoy all the puzzles and features without an internet connection.

### How many Sudoku puzzles are available in Brain Train Sudoku?

Brain Train Sudoku offers over 10,000 free Sudoku puzzles. This extensive collection ensures a long-lasting and engaging experience for players.

### What are the difficulty levels in Brain Train Sudoku?

Brain Train Sudoku features five difficulty levels: BASIC, EASY, NORMAL, HARD, and EXTREME. This allows players of all skill levels, from beginners to masters, to find a suitable challenge.

### Does Brain Train Sudoku track my progress?

Yes, Brain Train Sudoku includes a statistics feature that analyzes your information, including average completion time. This helps you track your improvement over time.

### What happens to my data if I delete Brain Train Sudoku?

If you delete Brain Train Sudoku from your device, all associated app data will be deleted. It is recommended to back up any important progress if possible.

### Is Brain Train Sudoku suitable for children?

Brain Train Sudoku has an age rating of 4+, making it suitable for children. The game's simple rules and engaging puzzles can be beneficial for cognitive development.

### How often is Brain Train Sudoku updated?

Brain Train Sudoku was last updated on January 10, 2018, with version 1.0.2. This indicates infrequent updates since its release on January 4, 2018.

## Version history (last 3 releases)

### 1.0.2 — 2018-01-10

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

Some bugs fixed and app optimization.

### 1.0.1 — 2018-01-05

Some bugs fixed and app optimization.

### 1.0.0 — 2018-01-04

No release notes.

## Apps similar to Brain Train Sudoku

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Uluka Sudoku - Number Puzzle](https://appshunter.io/ios/app/uluka-sudoku-number-puzzle/id6759238349) | — | Free | Games |
| [Luma Sudoku](https://appshunter.io/ios/app/luma-sudoku/id6756858769) | 5.0 (6) | Free | Games |
| [Zen Sudoku: No Timer & Battle](https://appshunter.io/ios/app/zen-sudoku-no-timer-and-battle/id6756481478) | — | Free | Games |
| [Sudoku - Hints & Logic](https://appshunter.io/ios/app/sudoku-hints-and-logic/id6769049219) | 5.0 (1) | Free | Games |
| [KiVa Game 2](https://appshunter.io/ios/app/kiva-game-2/id1041374783) | — | Free | Games |
| [Sudoku Dot: Daily Brain Puzzle](https://appshunter.io/ios/app/sudoku-dot-daily-brain-puzzle/id6759490885) | — | Free | Games |

## More apps by FunnyPack Inc.

- [Fishing Rivals : Hook & Catch](https://appshunter.io/ios/app/fishing-rivals-hook-and-catch/id1215132089)
- [낚시왕 : 도시어부의 길](https://appshunter.io/ios/app/id1394456605)
- [Fishing King :The Urban Angler](https://appshunter.io/ios/app/fishing-king-the-urban-angler/id1482586192)
- [Color Pang: Simple Tile Puzzle](https://appshunter.io/ios/app/color-pang-simple-tile-puzzle/id1499610241)
- [Jewels Match : Puzzle Game](https://appshunter.io/ios/app/jewels-match-puzzle-game/id6447329727)

All apps by FunnyPack Inc.: https://appshunter.io/developer/1215132088

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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 2026-07-08.*