# Number in mind vs FORCE CALCULATOR

The clearest difference is in-app purchases: Number in mind at none against FORCE CALCULATOR's 1. Number in mind also leads on iOS requirement (15.1 vs 18.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. FORCE CALCULATOR sells 1 one-off in-app purchase. Number in mind asks for nothing beyond the download.

Number in mind ships an update every 9 days, FORCE CALCULATOR every 2 weeks. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Number in mind | FORCE CALCULATOR |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/force-calculator-magic/id6806258142/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 2 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 21 MB | 2 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [ANNA ARAKAWA](https://appshunter.io/developer/6801572574) | [Akinori Kobayashi](https://appshunter.io/developer/6806258144) |

## What reviewers say

### Number in mind

[App page](https://appshunter.io/ios/app/number-in-mind/id6801572572)

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

**In-app purchases:** none


### FORCE CALCULATOR

[App page](https://appshunter.io/ios/app/force-calculator-magic/id6806258142)

This app functions as a standard calculator but includes secret tools for magicians to perform tricks. It offers a free version with basic calculator functions and a one-time purchase for advanced performance features, all while appearing as an ordinary calculator to an audience.

**Highlights:** Secret performance tools for magicians, Prediction and coincidence modes, Audience-participation features, Interactive tutorials, Multiple calculator styles, Calculation history

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $59.99 | one-time |


## Frequently asked questions

### Is Number in mind free?

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

### Is FORCE CALCULATOR free?

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

### Do Number in mind or FORCE CALCULATOR have ads?

Neither Number in mind nor FORCE CALCULATOR shows ads.

### Which is updated more often, Number in mind or FORCE CALCULATOR?

Number in mind ships an update every 9 days, and FORCE CALCULATOR every 2 weeks. Most recently, Number in mind was updated on October 24, 2026 and FORCE CALCULATOR on October 29, 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.*