# Sudojo vs Tetsudoku

The clearest difference is update cadence: Sudojo at every 9 days against Tetsudoku's every 5 weeks. Sudojo also leads on device support (4 vs 2) and iOS requirement (15.1 vs 18.0). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Sudojo sells 6 in-app purchases, starting at $4.99 per month and Tetsudoku sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for Sudojo against 5.0 for Tetsudoku. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Sudojo ships an update every 9 days, Tetsudoku every 5 weeks. The most recent releases landed on September 9, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Sudojo | Tetsudoku |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/sudojo/id6739454562/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/tetsudoku/id6762089912/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 5 weeks |
| Monetization | Freemium | Free with in-app purchases |
| Size | 63 MB | 78 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sudobility Inc](https://appshunter.io/developer/1785414867) | [Anodized Software](https://appshunter.io/developer/789609150) |

## What reviewers say

### Sudojo

[App page](https://appshunter.io/ios/app/sudojo/id6739454562)

This app teaches you how to solve Sudoku puzzles by mastering over 60 techniques and progressing through a structured belt system. It offers daily challenges, a smart hint system, and multiple difficulty levels to guide you from beginner to expert.

**Highlights:** Master 60+ Sudoku solving techniques, Structured belt progression system, Daily challenges tailored to skill level, Smart hint system with step-by-step logic, Multiple difficulty levels from beginner to expert, Custom puzzle entry and scanning, Sync progress across devices

**Features:** Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Blue Belt Monthly Subscription | $4.99 | per month |
| Blue Belt Quarterly Membership | $9.99 | per 3 months |
| Red Belt Monthly Membership | $9.99 | per month |
| Red Belt Quarter Membership | $19.99 | per 3 months |
| Blue Belt Yearly Membership | $29.99 | per year |
| Red Belt Yearly Membership | $59.99 | per year |


### Tetsudoku

[App page](https://appshunter.io/ios/app/tetsudoku/id6762089912)

This app teaches logical Sudoku solving with daily puzzles and detailed hints. It automatically tracks candidates and offers a learn section with fifteen solving strategies. Unlock unlimited custom puzzles and track your progress.

**Highlights:** Daily puzzles (Easy, Medium, Hard, Expert), Logical step-by-step hints, Fifteen solving strategies with practice, Automatic candidate tracking, Custom puzzle generation, Solve time and progress tracking

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tetsudoku Unlimited | $4.99 | one-time |


## Frequently asked questions

### Is Sudojo free?

Sudojo is free to download, with in-app purchases available.

### Is Tetsudoku free?

Tetsudoku is free to download, with in-app purchases available.

### Which has better reviews, Sudojo or Tetsudoku?

Sudojo and Tetsudoku are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Sudojo or Tetsudoku have ads?

Neither Sudojo nor Tetsudoku shows ads.

### Which is updated more often, Sudojo or Tetsudoku?

Sudojo ships an update every 9 days, and Tetsudoku every 5 weeks. Most recently, Sudojo was updated on September 9, 2026 and Tetsudoku on October 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*