# Missing Numbers Minds vs Mental Calculation

The clearest difference is in-app purchases: Mental Calculation at none against Missing Numbers Minds's 2. Mental Calculation also leads on iOS requirement (12.1 vs 26.1). Missing Numbers Minds's advantage is ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. Missing Numbers Minds sells 2 one-off in-app purchases. Mental Calculation asks for nothing beyond the download.

Missing Numbers Minds ships an update every 5 months, Mental Calculation every 3 months. The most recent releases landed on October 26, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Missing Numbers Minds | Mental Calculation |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.8 (22 ratings)](https://appshunter.io/ios/app/mental-calculation-mathybot/id1468698300/reviews)** |
| Number of ratings | — | **22** |
| Positive reviews | — | 81.3% of reviews |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Every 3 months** |
| Monetization | — | Ad-supported |
| Size | 4 MB | 14 MB |
| Requires iOS | 26.1 | **12.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Juan Fullana](https://appshunter.io/developer/692107580) | [Jaime C. Carriedo](https://appshunter.io/developer/785723408) |

## What reviewers say

### Missing Numbers Minds

[App page](https://appshunter.io/ios/app/missing-numbers-minds/id980949764)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Donation for maintenance. | $0.99 | one-time |
| Extra for develop and maintenance | $0.99 | one-time |


### Mental Calculation

[App page](https://appshunter.io/ios/app/mental-calculation-mathybot/id1468698300)

Practice basic arithmetic operations like addition, subtraction, multiplication, and division. Engage in challenges against the AI or another player, choosing difficulty levels to improve your math skills with fun.

**Highlights:** Addition and subtraction practice, Times tables and division, Challenge MathyBot mode, Two-player mode, Selectable difficulty levels, Customizable operations

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

**In-app purchases:** none


## Frequently asked questions

### Is Missing Numbers Minds free?

Missing Numbers Minds is free to download, with in-app purchases available.

### Is Mental Calculation free?

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

### Do Missing Numbers Minds or Mental Calculation have ads?

Mental Calculation shows ads; Missing Numbers Minds does not.

### Which is updated more often, Missing Numbers Minds or Mental Calculation?

Missing Numbers Minds ships an update every 5 months, and Mental Calculation every 3 months. Most recently, Missing Numbers Minds was updated on October 26, 2026 and Mental Calculation on November 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.*