# Mental Math Games vs ISFB

The clearest difference is in-app purchases: ISFB at none against Mental Math Games's 3. ISFB also leads on device support (3 vs 1) and iOS requirement (15.6 vs 26.0). Mental Math Games's advantage is update cadence (every 9 days vs every 6 weeks). On price and ads there is nothing between them.

Both are free to download. Mental Math Games sells 3 in-app purchases, starting at $4.99 per month. ISFB asks for nothing beyond the download.

Mental Math Games ships an update every 9 days, ISFB every 6 weeks. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Mental Math Games | ISFB |
| --- | --- | --- |
| 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 6 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 58 MB | 335 MB |
| Requires iOS | 26.0 | **15.6** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Peter Schmidt](https://appshunter.io/developer/1551025258) | [Imarticus](https://appshunter.io/developer/1479035796) |

## 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 (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $4.99 | per month |
| Pro Annual | $17.99 | per year |
| 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


### ISFB

[App page](https://appshunter.io/ios/app/isfb/id6797468324)

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

**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 ISFB free?

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

### Do Mental Math Games or ISFB have ads?

Neither Mental Math Games nor ISFB shows ads.

### Which is updated more often, Mental Math Games or ISFB?

Mental Math Games ships an update every 9 days, and ISFB every 6 weeks. Most recently, Mental Math Games was updated on November 3, 2026 and ISFB on October 31, 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.*