# Melater vs 루딘프

The clearest difference is in-app purchases: 루딘프 at none against Melater's 2. 루딘프 also leads on device support (3 vs 1) and iOS requirement (13.0 vs 16.6). Melater's advantage is update cadence (every 5 days vs every 11 days). On price and ads there is nothing between them.

Both are free to download. Melater sells 2 in-app purchases, starting at $1.99 per month. 루딘프 asks for nothing beyond the download.

Melater ships an update every 5 days, 루딘프 every 11 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Melater | 루딘프 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 11 days |
| Size | 29 MB | 60 MB |
| Requires iOS | 16.6 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [depaier](https://appshunter.io/developer/1798257468) | [Seung Hyun Oh](https://appshunter.io/developer/1896164753) |

## What reviewers say

### Melater

[App page](https://appshunter.io/ios/app/melater-diary-for-future-me/id6748441398)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Melater Premium(Monthly) | $1.99 | per month |
| Melater Premium(Annual) | $6.99 | per year |


### 루딘프

[App page](https://appshunter.io/ios/app/ai/id6766019247)

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

**In-app purchases:** none


## Frequently asked questions

### Is Melater free?

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

### Is 루딘프 free?

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

### Do Melater or 루딘프 have ads?

Neither Melater nor 루딘프 shows ads.

### Which is updated more often, Melater or 루딘프?

Melater ships an update every 5 days, and 루딘프 every 11 days. Most recently, Melater was updated on October 24, 2026 and 루딘프 on October 25, 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.*