# Postidal Union vs KOOF

The clearest difference is update cadence: Postidal Union at every 2 days against KOOF's weekly. 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.

Postidal Union ships an update every 2 days, KOOF weekly. The most recent releases landed on October 1, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Postidal Union | KOOF |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 days** | Weekly |
| Size | 33 MB | 70 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Postidal, Inc.](https://appshunter.io/developer/1164625561) | [Cashbox Incorporated](https://appshunter.io/developer/1779048417) |

## What reviewers say

### Postidal Union

[App page](https://appshunter.io/ios/app/postidal-union/id6742790175)

**Features:** macOS Compatibility

**In-app purchases:** none


### KOOF

[App page](https://appshunter.io/ios/app/koof/id6788749322)

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

**In-app purchases:** none


## Frequently asked questions

### Is Postidal Union free?

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

### Is KOOF free?

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

### Do Postidal Union or KOOF have ads?

Neither Postidal Union nor KOOF shows ads.

### Which is updated more often, Postidal Union or KOOF?

Postidal Union ships an update every 2 days, and KOOF weekly. Most recently, Postidal Union was updated on October 1, 2026 and KOOF on October 6, 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.*