# Correctbook App vs Genus Professional

The clearest difference is update cadence: Genus Professional at every 2 months against Correctbook App's every 9 months. Correctbook App's advantage is iOS requirement (16.0 vs 18.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Correctbook App ships an update every 9 months, Genus Professional every 2 months. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Correctbook App | Genus Professional |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 2 months** |
| Size | 30 MB | 74 MB |
| Requires iOS | **16.0** | 18.6 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 17+ |
| Developer | [Correctbook](https://appshunter.io/developer/1691849771) | [Genus Care BV](https://appshunter.io/developer/1524941769) |

## What reviewers say

### Correctbook App

[App page](https://appshunter.io/ios/app/correctbook-app/id6450104369)

**Features:** Vision Pro support

**In-app purchases:** none


### Genus Professional

[App page](https://appshunter.io/ios/app/genus-professional/id6758957369)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Correctbook App free?

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

### Is Genus Professional free?

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

### Do Correctbook App or Genus Professional have ads?

Neither Correctbook App nor Genus Professional shows ads.

### Which is updated more often, Correctbook App or Genus Professional?

Correctbook App ships an update every 9 months, and Genus Professional every 2 months. Most recently, Correctbook App was updated on October 25, 2026 and Genus Professional on October 28, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*