# Lunar Memory vs K.ID 등록증 알리미

The clearest difference is update cadence: K.ID 등록증 알리미 at every 4 days against Lunar Memory's every 3 weeks. 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.

Lunar Memory ships an update every 3 weeks, K.ID 등록증 알리미 every 4 days. The most recent releases landed on September 7, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Lunar Memory | K.ID 등록증 알리미 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Size | 30 MB | 10 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [hyukjoo kwon](https://appshunter.io/developer/1609024229) | [CHAN YUN](https://appshunter.io/developer/1847636941) |

## What reviewers say

### Lunar Memory

[App page](https://appshunter.io/ios/app/lunar-memory/id6747917865)

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

**In-app purchases:** none


### K.ID 등록증 알리미

[App page](https://appshunter.io/ios/app/kid/id6754282477)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Lunar Memory free?

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

### Is K.ID 등록증 알리미 free?

K.ID 등록증 알리미 is free to download, with no in-app purchases.

### Do Lunar Memory or K.ID 등록증 알리미 have ads?

Neither Lunar Memory nor K.ID 등록증 알리미 shows ads.

### Which is updated more often, Lunar Memory or K.ID 등록증 알리미?

Lunar Memory ships an update every 3 weeks, and K.ID 등록증 알리미 every 4 days. Most recently, Lunar Memory was updated on September 7, 2026 and K.ID 등록증 알리미 on September 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.*