# Calculus vs MemoryLab Pro

The clearest difference is in-app purchases: MemoryLab Pro at none against Calculus's 1. MemoryLab Pro also leads on iOS requirement (15.1 vs 17.6). On price, ads and device support there is nothing between them.

Both are free to download. Calculus sells 1 one-off in-app purchase. MemoryLab Pro asks for nothing beyond the download.

## The numbers

| Metric | Calculus | MemoryLab Pro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Weekly | — |
| Size | 29 MB | 30 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [光浩 李](https://appshunter.io/developer/1576352133) | [Raphael Benat Renucci](https://appshunter.io/developer/1876003699) |

## What reviewers say

### Calculus

[App page](https://appshunter.io/ios/app/calculus-learn-and-practice/id6758305500)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 解锁全部章节 | $9.99 | one-time |


### MemoryLab Pro

[App page](https://appshunter.io/ios/app/memorylab-pro/id6758959986)

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

**In-app purchases:** none


## Frequently asked questions

### Is Calculus free?

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

### Is MemoryLab Pro free?

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

### Do Calculus or MemoryLab Pro have ads?

Neither Calculus nor MemoryLab Pro 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.*