# Mental Math vs VOISS

The clearest difference is in-app purchases: VOISS at none against Mental Math's 1. VOISS also leads on ads (none vs shown). Mental Math's advantage is iOS requirement (13.0 vs 15.0). On price, update cadence and device support there is nothing between them.

Both are free to download. Mental Math sells 1 one-off in-app purchase. VOISS asks for nothing beyond the download.

Mental Math ships an update every 6 weeks, VOISS every 2 months. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Mental Math | VOISS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/mental-math-train-your-brain/id1499208866/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 6 weeks** | Every 2 months |
| Monetization | Free | — |
| Size | 51 MB | 3.2 GB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Amna Mahmood](https://appshunter.io/developer/1483939415) | [VOISS, LLC](https://appshunter.io/developer/1820519088) |

## What reviewers say

### Mental Math

[App page](https://appshunter.io/ios/app/mental-math-train-your-brain/id1499208866)

This free application helps you improve your mental calculation skills. It assesses your strengths and weaknesses to create a personalized practice plan, offering tips and exercises to master mathematical concepts quickly and efficiently.

**Highlights:** Personalized learning plans, Identifies strengths and weaknesses, Teaches mental math tricks, Practice exercises, Skill assessment

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |


### VOISS

[App page](https://appshunter.io/ios/app/voiss/id1627278569)

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

**In-app purchases:** none


## Frequently asked questions

### Is Mental Math free?

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

### Is VOISS free?

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

### Do Mental Math or VOISS have ads?

Mental Math shows ads; VOISS does not.

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

Mental Math ships an update every 6 weeks, and VOISS every 2 months. Most recently, Mental Math was updated on October 24, 2026 and VOISS 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.*