# Mental Math vs Hitori Pro

The clearest difference is rating: Mental Math at 4.7 against Hitori Pro's 4.0. Mental Math also leads on in-app purchases (none vs 10) and ratings volume (44 vs 5). Hitori Pro's advantage is update cadence (monthly vs every 3 months) and review sentiment (100% vs 90%). On ads and chart position there is nothing between them.

Mental Math costs $2.99 and Hitori Pro $0.99 up front. Hitori Pro sells 10 one-off in-app purchases. Mental Math asks for nothing beyond the download.

Mental Math holds the better App Store score, 4.7 against 4.0. That said, the two scores are not equally well evidenced: Mental Math has 44 ratings behind it against 5, so its average is the more settled of the two. Written reviews complicate that: 90% of Mental Math's written reviews are positive against 100% of Hitori Pro's, so the app with the better star average is not the one people write more warmly about.

Mental Math ships an update every 3 months, Hitori Pro monthly. The most recent releases landed on October 14, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Mental Math | Hitori Pro |
| --- | --- | --- |
| Price | $2.99 | **$0.99** |
| Rating | **[4.7 (44 ratings)](https://appshunter.io/ios/app/mental-math-arithmetic-quiz/id305627630/reviews)** | [4.0 (5 ratings)](https://appshunter.io/ios/app/hitori-pro/id1264501421/reviews) |
| Number of ratings | **44** | 5 |
| Positive reviews | 90.2% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | **Free** | Paid |
| Best chart rank | **#57** | #154 |
| Size | 22 MB | 11 MB |
| Requires iOS | **10.3** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Trilliarden Entertainment GmbH](https://appshunter.io/developer/1121555076) | [Christian Lueth](https://appshunter.io/developer/1041680819) |

## What reviewers say

### Mental Math

[App page](https://appshunter.io/ios/app/mental-math-arithmetic-quiz/id305627630)

**Currently charting:** #57 Top Paid · Trivia (US App Store)

Enhance your calculation skills with a variety of math exercises and difficulty levels. This brain training game offers engaging practice in arithmetic, percentages, Roman numerals, and more. It's designed to be fun and effective for all ages.

**Highlights:** Multiple exercise categories, Adjustable difficulty levels, Time limit options, Order of operations practice, Multiplication table drills, Roman numeral exercises

**In-app purchases:** none

**What reviewers like**

- 👍 Basic but essential
- 👍 Great morning workout
- 👍 Fun for any ages
- 👍 Fun app
- 👍 Great Practice!

**What reviewers complain about**

- 🐛 Negative number selection
- 🐛 Negative Symbol not operating

**Reported bugs**

- The app has stopped functioning in iOS 8
- The keypad was changed around, which is confusing

**Requested features**

- Expand the difficulty of the problems
- Better randomizer as there are a lot of repeats
- Add tutorials on how the calculations are made
- Allow users to create their own image library
- Add a scoring mechanism based on time, correct answers and difficulty


### Hitori Pro

[App page](https://appshunter.io/ios/app/hitori-pro/id1264501421)

**Currently charting:** #154 Top Paid · Trivia (US App Store)

This logic puzzle game offers a unique challenge based on Japanese "leave me alone" rules. It features multiple difficulty levels, layouts, and languages, with additional puzzle packs available for purchase. Enjoy a completely ad-free experience on your Apple devices.

**Highlights:** Multiple difficulty levels, Light, dark, and coffee layouts, English and German language support, Game Center integration, Portrait and landscape modes, Pinch-to-zoom functionality

**Features:** Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| L01: Puzzle Pack 1 (24 puzzle) | $0.99 | one-time |
| A01: Greenhorn 1 (20 puzzles) | $0.99 | one-time |
| B01: Beginner 1 (20 puzzles) | $0.99 | one-time |
| C01: Advanced 1 (20 puzzles) | $0.99 | one-time |
| D01: Amateur 1 (20 puzzles) | $0.99 | one-time |
| E01: Professio. 1 (20 puzzles) | $0.99 | one-time |
| F01: Expert 1 (20 puzzles) | $0.99 | one-time |
| G01: Whiz 1 (20 puzzles) | $0.99 | one-time |
| H01: Grandmast. 1 (20 puzzles) | $0.99 | one-time |
| X01: Mega Pack 1 (160 puzzles) | $1.99 | one-time |


## Frequently asked questions

### Is Mental Math free?

Mental Math costs $2.99, with no in-app purchases.

### Is Hitori Pro free?

Hitori Pro costs $0.99, and also offers in-app purchases.

### Which has better reviews, Mental Math or Hitori Pro?

Mental Math is rated higher. Mental Math averages 4.7 out of 5 from 44 ratings, while Hitori Pro averages 4.0 from 5 ratings.

### Do Mental Math or Hitori Pro have ads?

Neither Mental Math nor Hitori Pro shows ads.

### Which is updated more often, Mental Math or Hitori Pro?

Mental Math ships an update every 3 months, and Hitori Pro monthly. Most recently, Mental Math was updated on October 14, 2026 and Hitori Pro on September 29, 2026.

### Which is more popular, Mental Math or Hitori Pro?

Mental Math currently peaks at #57 in the App Store charts, and Hitori Pro at #154. Chart position reflects recent download velocity rather than total install base.

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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.*