# Sudoku Trainer! — Master solving techniques

> A well-crafted Sudoku puzzle app with multiple difficulties and helpful solving tools. (iPhone/iPad app by Nicholas Nelson.)

- Source: https://appshunter.io/ios/app/sudoku-trainer/id6749164735 (this page in markdown: same URL + `.md`)
- Developer: [Nicholas Nelson](https://appshunter.io/developer/1826651384)
- Category: Games, Board, Puzzle
- Price: Free with in-app purchases
- Rating: 5.00/5 from 5 App Store ratings · 3 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.1 · 77 MB
- Languages: American English
- Released: 2025-07-28
- Data updated: 2026-08-17
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/sudoku-trainer/id6749164735/reviews.md

## What is Sudoku Trainer!?

We built the Sudoku app we wanted to play - one that respects your time and intelligence. No flashy animations or unnecessary features. Just a well-crafted puzzle experience that feels right.

What's included:
• Multiple difficulty levels from Easy to Diabolical
• A clean design that's easy on the eyes
• Notes mode for tracking possibilities
• Button to fill all candidates
• Hints feature with smart analysis to help you find the next move
• Auto-save so you never lose progress
• Dark mode for night solving
• Full accessibility support
• Play history tracking to see what you've played, and what games you couldn't finish, and go back to them to try again

Nice touches:
• See how many of each number are left to place
• Cells highlight to help you track rows, columns, and boxes
• Gentle haptic feedback (if you like that sort of thing)
• Timer and move counter for the competitive types
• Works perfectly offline

We focused on getting the basics right - smooth gameplay, readable numbers, and puzzles that load instantly. Whether you're killing time on the subway or unwinding before bed, it's just a solid Sudoku app that works the way you'd expect.

Terms of use: https://sudoku-trainer.com/terms

## Key features

- Multiple difficulty levels
- Notes mode
- Candidate filling button
- Smart hints
- Auto-save progress
- Dark mode
- Offline play

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Sudoku Premium Monthly | $0.99 | per month |
| Sudoku Premium Annual | $4.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Sudoku Premium Lifetime | $9.99 | one-time |


## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/sudoku-trainer/id6749164735/reviews.md

### 5/5 — Absolutely incredible

*2026-06-20*

Fantastic app for learning Sudoku techniques. UI is great too

### 5/5 — The only sudoku app you will ever need.

*2026-04-19*

This was already an incredibly good Sudoku app with all of the features coaching, teaching an auto fill notes that I could want. The only feature that was missing is the ability to color notes to make chains easier to see. I requested a feature and the developer implemented that exact feature within three days. There are now five color options to highlight any notes you have in the cells. Genuinely the best and most perfect and polished sudoku app I have ever used.

### 5/5 — One of the best sodokus out there

*2026-02-15*

Great Sudoku app with lots of great features and a great interface. It also teaches you important strategies for solving more difficult puzzles, and doing these sudokus will keep your mind sharp.

## Frequently asked questions about Sudoku Trainer!

### What are the difficulty levels in Sudoku Trainer!?

Sudoku Trainer! offers multiple difficulty levels, ranging from Easy to Diabolical, allowing players to choose a challenge that suits their skill level.

### Does Sudoku Trainer! work offline?

Yes, Sudoku Trainer! works perfectly offline, allowing you to enjoy puzzles without an internet connection.

### Can I track my progress in Sudoku Trainer!?

Yes, the app includes play history tracking, so you can see which games you've played, which ones you couldn't finish, and revisit them.

### Does Sudoku Trainer! have ads?

Yes, Sudoku Trainer! contains advertisements.

### What are the subscription options for Sudoku Trainer!?

Sudoku Trainer! offers a 'Sudoku Premium Monthly' subscription for $0.99 and an 'Sudoku Premium Annual' subscription for $4.99.

### Is Sudoku Trainer! suitable for all ages?

Sudoku Trainer! has an age rating of 4+, making it suitable for a wide range of players.

### How often is Sudoku Trainer! updated?

The latest version of Sudoku Trainer! is 2.19.1, and it was last updated on April 29, 2026, indicating regular updates.

### Does Sudoku Trainer! offer hints?

Yes, Sudoku Trainer! features a hints feature with smart analysis to help you find your next move.

## Version history (last 5 releases)

### 2.19.1 — 2026-04-29

New: Training Mode — Master solving techniques one at a time! Pick a technique, solve curated puzzles, and get instant feedback on your moves. Perfect for leveling up your Sudoku skills.

Also in this update:
- Improved technique names for clarity
- Fixed note colors in light themes
- Various bug fixes and polish

### 2.19.0 — 2026-04-28

New: Training Mode — Master solving techniques one at a time! Pick a technique, solve curated puzzles, and get instant feedback on your moves. Perfect for leveling up your Sudoku skills.

Also in this update:
- Improved technique names for clarity
- Fixed note colors in light themes
- Various bug fixes and polish

### 2.18.0 — 2026-04-18

Colored Notes
Notes can now be colored to help with chain analysis, guess and check, and other advanced techniques. Colored notes are a premium feature.

Improved Hint System
The puzzle engine has been completely rebuilt, and the hint system now finds all available actions at your current board state. Tap the hint button multiple times to rotate through every available hint.

### 2.17.0 — 2026-04-02

- Revamp sudoku learning page and material
- Add left and right swipe gestures to quickly go back and forth between the game and the learning material
- Enhance example boards with richer content to make the puzzles more realistic

### 2.16.0 — 2026-03-04

New features:
- Fast forward mode allows you to target advanced techniques for practice
- Play history tracks normal gameplay as well as fast forwarded games
- Introduction added for new users to be introduced to the apps key features

Bugs fixed:
- fixed font scaling bug - system font settings no longer break the app layout
- Fixed help button styling in light mode
- Fixed ordering issue and accuracy of locked candidates help section (posting/claiming variations were backwards)
- Fixed database upgrade process to better detect when updates are needed and preserve play history

Improvements:
- Help screen updated with correct technique orders
- Help screen updated with documentation about new fast forward and play history features

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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 2026-08-17.*