# 포스트킷 vs Dimmer

The clearest difference is in-app purchases: 포스트킷 at none against Dimmer's 1. Dimmer's advantage is update cadence (daily vs every 4 days). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Dimmer sells 1 in-app purchase, starting at $5.99 per month. 포스트킷 asks for nothing beyond the download.

포스트킷 ships an update every 4 days, Dimmer daily. The most recent releases landed on October 7, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | 포스트킷 | Dimmer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 4 days | **Daily** |
| Size | 41 MB | 59 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [jung hyeon kim](https://appshunter.io/developer/1700174872) | [Sphere Min Inc.](https://appshunter.io/developer/6806589537) |

## What reviewers say

### 포스트킷

[App page](https://appshunter.io/ios/app/postkit/id6470146461)

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

**In-app purchases:** none


### Dimmer

[App page](https://appshunter.io/ios/app/dimmer/id6783859912)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Dimmer Plus | $5.99 | per month |


## Frequently asked questions

### Is 포스트킷 free?

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

### Is Dimmer free?

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

### Do 포스트킷 or Dimmer have ads?

Both 포스트킷 and Dimmer show ads.

### Which is updated more often, 포스트킷 or Dimmer?

포스트킷 ships an update every 4 days, and Dimmer daily. Most recently, 포스트킷 was updated on October 7, 2026 and Dimmer on October 14, 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.*