# Calculus Formulas vs MyProMind

The clearest difference is in-app purchases: MyProMind at none against Calculus Formulas's 3. Calculus Formulas's advantage is iOS requirement (15.1 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Calculus Formulas sells 3 in-app purchases, starting at $2.99 per 7 days. MyProMind asks for nothing beyond the download.

## The numbers

| Metric | Calculus Formulas | MyProMind |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | — | Weekly |
| Size | 48 MB | 71 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [Mobin Akhter](https://appshunter.io/developer/1812505286) | [DataGrids](https://appshunter.io/developer/1512824399) |

## What reviewers say

### Calculus Formulas

[App page](https://appshunter.io/ios/app/calculus-formulas-calcref/id6761394165)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $2.99 | per 7 days |
| CalcRef Yearly Premium | $24.99 | per year |
| CalcRef Premium Lifetime | $44.99 | one-time |


### MyProMind

[App page](https://appshunter.io/ios/app/mypromind/id6779337963)

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

**In-app purchases:** none


## Frequently asked questions

### Is Calculus Formulas free?

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

### Is MyProMind free?

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

### Do Calculus Formulas or MyProMind have ads?

Neither Calculus Formulas nor MyProMind shows ads.

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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.*