Mental Math vs Hitori Pro
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Mental Math
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.
- Multiple exercise categories
- Adjustable difficulty levels
- Time limit options
- Order of operations practice
- Multiplication table drills
- Roman numeral exercises
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The classic math trainer with over a million downloads! Choose your exercises from many categories and difficulty levels. From the reviews: "Great little App" "Easy and efficient" "Wonderful and fun" Boost your gray matter now! Here's a quick check: What's 7 × (4 + 9)? Needed more than five seconds? This can be better! With Mental Math you can playfully improve your mental calculation skills through various exercises. Image puzzles are an incentive to carry on practicing. Mental Math has been developed in collaboration with mathematics teachers and is successfully put to used in many schools. Choose the exercises from many categories: - Basic Arithmetics - Division with Remainder - Percentage Calculation - Reading and Writing Roman Numerals - Common Multiples and Divisors Moreover, there are - 4 Difficulty Levels - an adjustable Time Limit - Exercises in order of operations and braces - Exercises to practice specific Multiplication Tables
Hitori Pro
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.
- Multiple difficulty levels
- Light, dark, and coffee layouts
- English and German language support
- Game Center integration
- Portrait and landscape modes
- Pinch-to-zoom functionality
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Solve Hitori (japanese for: "leave me alone") puzzles on your iPad or iPhone! If you like Sudoku, you will love Hitori! ++++++++++++++++++++++++++++++++ completely add-free! ++++++++++++++++++++++++++++++++ Features: 16 puzzles (Hitori): • 8 levels of difficulty each containing 2 puzzles from "Greenhorn" to "Grandmaster" • additional levelpacks available via in app purchase 72 puzzles (Hitori Pro): • 8 levels of difficulty each containing 9 puzzles from "Greenhorn" to "Grandmaster" • additional levelpacks available via in app purchase 3 layouts: • light • dark • coffee 2 languages: • german • english additional Features: • Game Center support • playable in portrait and landscape mode • use "Pinch-to-Zoom" for a better overview compatible devices: • iPhone 5 or newer • iPad • iPad Pro • iMac, MacBook, Mac Mini (requires iOS10.3/macOS10.5 or higher) ++++++++++++++++++++++++++++++++ If you like the app, please leave me a good review! If you have questions, problems or suggestions, please contact me by email to hitori.app@icloud.com. New puzzles are in progress and coming soon!
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Mental Math | Hitori Pro |
|---|---|---|
| Price | $2.99 | $0.99 — better |
| Rating | 4.7 (44 ratings) — better | 4.0 (5 ratings) |
| Positive reviews | 90.2% of reviews | 100.0% of reviews — better |
| Number of ratings | 44 — better | 5 |
| Update frequency | Every 3 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Paid |
| Best chart rank | #57 — better | #154 |
| Devices | iPhone, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 10.3 — better | 13.0 |
| Further details — not scored | ||
| Size | 22 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Trilliarden Entertainment GmbH | Christian Lueth |
Customer experience
Mental Math
Hitori Pro
Bugs and requests
Mental Math
Reported bugs
2 issues- The app has stopped functioning in iOS 8
- The keypad was changed around, which is confusing
Requested features
17 requests- 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
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- Add a timer that tells you your time after each try
- Add 0-12 instead of 0-9
- Add ability to practice single addition the same way as multiplication
- Add American Division notation
- Allow users to select their own notation
- Change 'greatest common divisor' to 'greatest common factor'
- Remove the 'Do you want to continue' prompt
- Add more difficult Roman Numerals up to 1000
- Add currency section
- Add more options/selections for sound feedback
- Add a stop watch for lesson duration (stats)
- Add the ability to upload personal pics
Hitori Pro
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Mental Math
No in-app purchases
Hitori Pro
- L01: Puzzle Pack 1 (24 puzzle)$0.99
- A01: Greenhorn 1 (20 puzzles)$0.99
- B01: Beginner 1 (20 puzzles)$0.99
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- C01: Advanced 1 (20 puzzles)$0.99
- D01: Amateur 1 (20 puzzles)$0.99
- E01: Professio. 1 (20 puzzles)$0.99
- F01: Expert 1 (20 puzzles)$0.99
- G01: Whiz 1 (20 puzzles)$0.99
- H01: Grandmast. 1 (20 puzzles)$0.99
- X01: Mega Pack 1 (160 puzzles)$1.99
