# Correctbook App vs Postnatal Planner

The clearest difference is in-app purchases: Correctbook App at none against Postnatal Planner's 1. Postnatal Planner's advantage is update cadence (every 5 days vs every 9 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Postnatal Planner sells 1 one-off in-app purchase. Correctbook App asks for nothing beyond the download.

Correctbook App ships an update every 9 months, Postnatal Planner every 5 days. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Correctbook App | Postnatal Planner |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 5 days** |
| Size | 30 MB | 5 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Correctbook](https://appshunter.io/developer/1691849771) | [Marten Assen](https://appshunter.io/developer/6814517807) |

## What reviewers say

### Correctbook App

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

**Features:** Vision Pro support

**In-app purchases:** none


### Postnatal Planner

[App page](https://appshunter.io/ios/app/postnatal-planner/id6814517805)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Postnatal Planner Plus | $3.99 | one-time |


## Frequently asked questions

### Is Correctbook App free?

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

### Is Postnatal Planner free?

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

### Do Correctbook App or Postnatal Planner have ads?

Neither Correctbook App nor Postnatal Planner shows ads.

### Which is updated more often, Correctbook App or Postnatal Planner?

Correctbook App ships an update every 9 months, and Postnatal Planner every 5 days. Most recently, Correctbook App was updated on October 25, 2026 and Postnatal Planner on October 31, 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.*