# Correctbook App vs P

The clearest difference is update cadence: P at fortnightly against Correctbook App's every 9 months. P also leads on iOS requirement (13.0 vs 16.0). 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, P fortnightly. The most recent releases landed on September 11, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Correctbook App | P |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/p-notifier/id6473805579/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Fortnightly** |
| Monetization | — | Free |
| Size | 30 MB | 36 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Correctbook](https://appshunter.io/developer/1691849771) | [SIFINE CO., LTD](https://appshunter.io/developer/1719881569) |

## What reviewers say

### Correctbook App

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

**Features:** Vision Pro support

**In-app purchases:** none


### P

[App page](https://appshunter.io/ios/app/p-notifier/id6473805579)

Access your account notifications with a simple shortcut. Quickly view unread messages and navigate to them with ease.

**Highlights:** Notification shortcut, Access unread messages, Easy navigation to notifications

**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 P free?

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

### Do Correctbook App or P have ads?

Neither Correctbook App nor P shows ads.

### Which is updated more often, Correctbook App or P?

Correctbook App ships an update every 9 months, and P fortnightly. Most recently, Correctbook App was updated on September 11, 2026 and P on September 24, 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.*