# Yoobi Software vs Correctbook App

The clearest difference is update cadence: Yoobi Software at every 3 weeks against Correctbook App's every 9 months. Yoobi Software also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

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

Yoobi Software ships an update every 3 weeks, Correctbook App every 9 months. The most recent releases landed on October 4, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Yoobi Software | Correctbook App |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 9 months |
| Size | 26 MB | 30 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [e-dynamics B.V.](https://appshunter.io/developer/724594732) | [Correctbook](https://appshunter.io/developer/1691849771) |

## What reviewers say

### Yoobi Software

[App page](https://appshunter.io/ios/app/yoobi-software/id1535928269)

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

**In-app purchases:** none


### Correctbook App

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

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Yoobi Software free?

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

### Is Correctbook App free?

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

### Do Yoobi Software or Correctbook App have ads?

Neither Yoobi Software nor Correctbook App shows ads.

### Which is updated more often, Yoobi Software or Correctbook App?

Yoobi Software ships an update every 3 weeks, and Correctbook App every 9 months. Most recently, Yoobi Software was updated on October 4, 2026 and Correctbook App on September 30, 2026.

---

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