# MentalMultiply vs (Open Source) Mental Math

The clearest difference is in-app purchases: (Open Source) Mental Math at none against MentalMultiply's 2. MentalMultiply's advantage is update cadence (fortnightly vs every 5 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. MentalMultiply sells 2 in-app purchases, starting at $4.99 per year. (Open Source) Mental Math asks for nothing beyond the download.

MentalMultiply ships an update fortnightly, (Open Source) Mental Math every 5 weeks. The most recent releases landed on October 8, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | MentalMultiply | (Open Source) Mental Math |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/open-source-mental-math/id6788418444/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 5 weeks |
| Monetization | — | Free |
| Size | 6 MB | 41 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Oren Frenkel](https://appshunter.io/developer/6787527169) | [AHMET EMRE DEDELER](https://appshunter.io/developer/1870913629) |

## What reviewers say

### MentalMultiply

[App page](https://appshunter.io/ios/app/mentalmultiply/id6787527166)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Annual Premium | $4.99 | per year |
| Lifetime Premium | $14.99 | one-time |


### (Open Source) Mental Math

[App page](https://appshunter.io/ios/app/open-source-mental-math/id6788418444)

This application offers a free, open-source platform for practicing mental arithmetic. It features timed tests, custom drills, and a comprehensive library of mental math tricks. All content is available offline without ads or paywalls.

**Highlights:** Timed arithmetic tests, Customizable drills, Mental math tricks library, Offline progress tracking, Multiple operation types, Fast session interface

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

**In-app purchases:** none


## Frequently asked questions

### Is MentalMultiply free?

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

### Is (Open Source) Mental Math free?

(Open Source) Mental Math is free to download, with no in-app purchases.

### Do MentalMultiply or (Open Source) Mental Math have ads?

Neither MentalMultiply nor (Open Source) Mental Math shows ads.

### Which is updated more often, MentalMultiply or (Open Source) Mental Math?

MentalMultiply ships an update fortnightly, and (Open Source) Mental Math every 5 weeks. Most recently, MentalMultiply was updated on October 8, 2026 and (Open Source) Mental Math on October 6, 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.*