# Mental Math Trainer vs COMath

The clearest difference is review sentiment: COMath at 100% against Mental Math Trainer's 58%. COMath also leads on in-app purchases (none vs 9) and rating (4.8 vs 4.5). Mental Math Trainer's advantage is ads (none vs shown) and update cadence (fortnightly vs monthly). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Mental Math Trainer sells 7 in-app purchases, starting at $2.99 per month. COMath asks for nothing beyond the download.

COMath holds the better App Store score, 4.8 against 4.5. That said, the two scores are not equally well evidenced: Mental Math Trainer has 228 ratings behind it against 45, so its average is the more settled of the two. Written reviews point the same way: 58% of Mental Math Trainer's written reviews are positive against 100% of COMath's.

Mental Math Trainer ships an update fortnightly, COMath monthly. The most recent releases landed on September 27, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Mental Math Trainer | COMath |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (228 ratings)](https://appshunter.io/ios/app/mental-math-trainer-puremath/id684305542/reviews) | **[4.8 (45 ratings)](https://appshunter.io/ios/app/comath-math-practice-puzzles/id1438026503/reviews)** |
| Number of ratings | **228** | 45 |
| Positive reviews | 57.8% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Fortnightly** | Monthly |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 50 MB | 89 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 9+ |
| Developer | [Stoyan Hristov](https://appshunter.io/developer/584595816) | [Jianfeng Wu](https://appshunter.io/developer/1435210283) |

## What reviewers say

### Mental Math Trainer

[App page](https://appshunter.io/ios/app/mental-math-trainer-puremath/id684305542)

Enhance your arithmetic abilities with this app. Practice addition, subtraction, multiplication, and division through engaging games and custom sessions. Track your progress and challenge friends to boost your mental math confidence and speed.

**Highlights:** Addition, subtraction, multiplication, division practice, Math Arcade mode with increasing difficulty, Customizable practice sessions, Memory training games (Find the Pairs), Progress tracking, Game Center integration for challenges

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Access | $2.99 | per month |
| Unlimited Access | $2.99 | per 7 days |
| Unlimited Access | $3.99 | per month |
| Unlimited Access | $9.99 | per year |
| Unlimited Access | $12.99 | per year |
| Unlimited Access | $14.99 | per year |
| Unlock Everything | $17.99 | one-time |

**What reviewers like**

- 🧠 Brain training and mental sharpness
- 👍 Useful for math skills improvement
- 🚀 Fast and easy to use
- ✅ Good for daily practice
- 💡 Gamifies math learning

**What reviewers complain about**

- 💸 Most features are paid/locked
- 💰 Deceptive free version
- 😩 Repetitive questions/levels
- 🐌 Slow animations
- 📱 UI can be improved (keypad style)

**Reported bugs**

- App crashes or doesn't open
- Purchases not unlocking features
- In-app purchase issues
- Timer continues when paused
- Drag response not registering input

**Requested features**

- Option to choose keypad style
- More difficult levels
- Infinite or custom exercise mode
- Dark mode support
- Landscape mode support


### COMath

[App page](https://appshunter.io/ios/app/comath-math-practice-puzzles/id1438026503)

This app acts as a personal math tutor, offering support and practice for arithmetic, algebra, and geometry. It provides over 100,000 word problems with step-by-step solutions and an equation solver to help students develop their math skills.

**Highlights:** Personalized math tutoring, Arithmetic practice (addition, subtraction, multiplication, division), Over 100,000 math word problems, Step-by-step equation solving, Algebra and geometry support, Practice without pencils

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Mental Math Trainer free?

Mental Math Trainer is free to download, with in-app purchases available.

### Is COMath free?

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

### Which has better reviews, Mental Math Trainer or COMath?

COMath is rated higher. Mental Math Trainer averages 4.5 out of 5 from 228 ratings, while COMath averages 4.8 from 45 ratings.

### Do Mental Math Trainer or COMath have ads?

COMath shows ads; Mental Math Trainer does not.

### Which is updated more often, Mental Math Trainer or COMath?

Mental Math Trainer ships an update fortnightly, and COMath monthly. Most recently, Mental Math Trainer was updated on September 27, 2026 and COMath on September 21, 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.*