# Mental Math vs ThinkFast

The clearest difference is update cadence: ThinkFast at every 10 days against Mental Math's every 3 months. ThinkFast also leads on price ($0.99 vs $2.99). Mental Math's advantage is review sentiment (90% vs 75%) and chart position (#52 vs unranked). On ads, in-app purchases and device support there is nothing between them.

Mental Math costs $2.99 and ThinkFast $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Mental Math ships an update every 3 months, ThinkFast every 10 days. The most recent releases landed on October 14, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Mental Math | ThinkFast |
| --- | --- | --- |
| Price | $2.99 | **$0.99** |
| Rating | **[4.7 (44 ratings)](https://appshunter.io/ios/app/mental-math-arithmetic-quiz/id305627630/reviews)** | — |
| Number of ratings | **44** | — |
| Positive reviews | **90.2% of reviews** | 75.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 10 days** |
| Monetization | **Free** | Paid |
| Best chart rank | **#52** | — |
| Size | 22 MB | 4 MB |
| Requires iOS | **10.3** | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Trilliarden Entertainment GmbH](https://appshunter.io/developer/1121555076) | [RHS International GmbH](https://appshunter.io/developer/408977594) |

## What reviewers say

### Mental Math

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

**Currently charting:** #52 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


### ThinkFast

[App page](https://appshunter.io/ios/app/thinkfast-quiz/id980958018)

Test your knowledge and speed with a challenging quiz game. Answer difficult questions across various subjects in a limited time. It's a fun way to increase and maintain your knowledge on the go.

**Highlights:** Timed challenges, Multiple subject categories, Daily knowledge boost, Apple Watch support, Constant question updates

**Features:** macOS Compatibility, Apple Watch app, 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 ThinkFast free?

ThinkFast costs $0.99, with no in-app purchases.

### Do Mental Math or ThinkFast have ads?

Neither Mental Math nor ThinkFast shows ads.

### Which is updated more often, Mental Math or ThinkFast?

Mental Math ships an update every 3 months, and ThinkFast every 10 days. Most recently, Mental Math was updated on October 14, 2026 and ThinkFast on October 9, 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.*