# Sudojo vs MentalMather

The clearest difference is in-app purchases: MentalMather at none against Sudojo's 6. Sudojo's advantage is ads (none vs shown) and update cadence (every 9 days vs every 3 weeks). On price, rating, ratings volume and device support there is nothing between them.

Both are free to download. Sudojo sells 6 in-app purchases, starting at $4.99 per month. MentalMather asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Sudojo against 5.0 for MentalMather. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

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

## The numbers

| Metric | Sudojo | MentalMather |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/sudojo/id6739454562/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/mentalmather/id6760533092/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 9 days** | Every 3 weeks |
| Monetization | Freemium | **Ad-supported** |
| Size | 74 MB | 55 MB |
| Requires iOS | **15.1** | 15.5 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Sudobility Inc](https://appshunter.io/developer/1785414867) | [Cortex Apps llc](https://appshunter.io/developer/1884834782) |

## 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 |


### MentalMather

[App page](https://appshunter.io/ios/app/mentalmather/id6760533092)

Track your daily cognitive sharpness with mental math exercises. This app measures your brain's current performance against your personal baseline, not to teach math but to gauge your mental acuity.

**Highlights:** Daily Sharpness Score, Personalized baseline comparison, Guided and Quick Play modes, Shareable challenges with friends, Detailed session history and analytics, Offline functionality

**In-app purchases:** none


## Frequently asked questions

### Is Sudojo free?

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

### Is MentalMather free?

MentalMather is free to download, with no in-app purchases.

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

Sudojo and MentalMather are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do Sudojo or MentalMather have ads?

MentalMather shows ads; Sudojo does not.

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

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

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