# Mental Math Games vs Trading Interview Math Trainer

The clearest difference is in-app purchases: Trading Interview Math Trainer at none against Mental Math Games's 7. Trading Interview Math Trainer also leads on device support (3 vs 1) and iOS requirement (15.1 vs 26.0). Mental Math Games's advantage is update cadence (every 9 days vs every 5 months). On price and ads there is nothing between them.

Both are free to download. Mental Math Games sells 7 in-app purchases, starting at $4.99 per month. Trading Interview Math Trainer asks for nothing beyond the download.

Mental Math Games ships an update every 9 days, Trading Interview Math Trainer every 5 months. The most recent releases landed on October 25, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Mental Math Games | Trading Interview Math Trainer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (1.2K ratings)](https://appshunter.io/ios/app/mental-math-games-numbio/id1551025256/reviews)** | — |
| Number of ratings | **1.2K** | — |
| Positive reviews | 93.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 5 months |
| Monetization | Free with in-app purchases | — |
| Size | 58 MB | 33 MB |
| Requires iOS | 26.0 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Peter Schmidt](https://appshunter.io/developer/1551025258) | [Trading Interview B.V.](https://appshunter.io/developer/1856959369) |

## What reviewers say

### Mental Math Games

[App page](https://appshunter.io/ios/app/mental-math-games-numbio/id1551025256)

Sharpen your mental math skills with this app offering a wide range of exercises from basic arithmetic to fractions and percentages. It features timed challenges, progress tracking, and customizable modes to suit all levels.

**Highlights:** Wide variety of math exercises, Timed challenges for speed, Progress tracking and high scores, Adjustable difficulty levels, Math tricks and shortcuts, Customizable trainer mode, Achievements and rewards

**Features:** Family Sharing

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $4.99 | per month |
| Pro access (secret discount) | $9.99 | per year |
| Pro Annual | $17.99 | per year |
| Small tip | $0.99 | one-time |
| Medium tip | $3.99 | one-time |
| Large tip | $8.99 | one-time |
| Pro Lifetime | $49.99 | one-time |

**What reviewers like**

- 🚀 Helpful for learning math
- 👍 Fun and engaging
- 👍 Clean and intuitive interface
- 🚀 Effective for improving mental math skills
- 👍 Great for all ages

**What reviewers complain about**

- 💰 Limited features in free version
- 🔒 Subscription required for full access
- 🐛 Occasional performance issues

**Reported bugs**

- Inconsistent scoring feedback
- Subscription issues with repeated charges

**Requested features**

- More advanced math operations (e.g., powers, roots)
- Customizable practice sessions
- Detailed performance analytics
- Ability to review past questions


### Trading Interview Math Trainer

[App page](https://appshunter.io/ios/app/trading-interview-math-trainer/id6755886895)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Mental Math Games free?

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

### Is Trading Interview Math Trainer free?

Trading Interview Math Trainer is free to download, with no in-app purchases.

### Do Mental Math Games or Trading Interview Math Trainer have ads?

Neither Mental Math Games nor Trading Interview Math Trainer shows ads.

### Which is updated more often, Mental Math Games or Trading Interview Math Trainer?

Mental Math Games ships an update every 9 days, and Trading Interview Math Trainer every 5 months. Most recently, Mental Math Games was updated on October 25, 2026 and Trading Interview Math Trainer on September 18, 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.*