# Mental Math vs Concentrate! IQ Trainer

The clearest difference is price: Concentrate! IQ Trainer at Free against Mental Math's $2.99. Concentrate! IQ Trainer also leads on update cadence (monthly vs every 3 months). Mental Math's advantage is chart position (#51 vs unranked) and iOS requirement (10.3 vs 12.0). On ads, in-app purchases and device support there is nothing between them.

Concentrate! IQ Trainer is free to download; Mental Math costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Mental Math ships an update every 3 months, Concentrate! IQ Trainer monthly. The most recent releases landed on October 31, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Mental Math | Concentrate! IQ Trainer |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[4.7 (45 ratings)](https://appshunter.io/ios/app/mental-math-arithmetic-quiz/id305627630/reviews)** | — |
| Number of ratings | **45** | — |
| Positive reviews | 90.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | Free | — |
| Best chart rank | **#51** | — |
| Size | 22 MB | 31 MB |
| Requires iOS | **10.3** | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Trilliarden Entertainment GmbH](https://appshunter.io/developer/1121555076) | [christoph joshua BOLL](https://appshunter.io/developer/1631352653) |

## What reviewers say

### Mental Math

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

**Currently charting:** #51 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


### Concentrate! IQ Trainer

[App page](https://appshunter.io/ios/app/concentrate-iq-trainer/id6738403503)

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

**In-app purchases:** none


## Frequently asked questions

### Is Mental Math free?

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

### Is Concentrate! IQ Trainer free?

Concentrate! IQ Trainer is free to download, with no in-app purchases.

### Do Mental Math or Concentrate! IQ Trainer have ads?

Neither Mental Math nor Concentrate! IQ Trainer shows ads.

### Which is updated more often, Mental Math or Concentrate! IQ Trainer?

Mental Math ships an update every 3 months, and Concentrate! IQ Trainer monthly. Most recently, Mental Math was updated on October 31, 2026 and Concentrate! IQ Trainer on October 25, 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.*