# Bye Boo 바이부 vs MCM 다이어리

The clearest difference is ads: Bye Boo 바이부 at none against MCM 다이어리's shown. MCM 다이어리's advantage is update cadence (daily vs monthly). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Bye Boo 바이부 ships an update monthly, MCM 다이어리 daily. Both last shipped on October 30, 2026.

## The numbers

| Metric | Bye Boo 바이부 | MCM 다이어리 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Daily** |
| Size | 99 MB | 54 MB |
| Requires iOS | 16.6 | **15.6** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Juri Choi](https://appshunter.io/developer/1824601251) | [Tae Won Kim](https://appshunter.io/developer/1838676515) |

## What reviewers say

### Bye Boo 바이부

[App page](https://appshunter.io/ios/app/bye-boo/id6748205348)

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

**In-app purchases:** none


### MCM 다이어리

[App page](https://appshunter.io/ios/app/mcm/id6756225475)

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

**In-app purchases:** none


## Frequently asked questions

### Is Bye Boo 바이부 free?

Bye Boo 바이부 is free to download, with no in-app purchases.

### Is MCM 다이어리 free?

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

### Do Bye Boo 바이부 or MCM 다이어리 have ads?

MCM 다이어리 shows ads; Bye Boo 바이부 does not.

### Which is updated more often, Bye Boo 바이부 or MCM 다이어리?

Bye Boo 바이부 ships an update monthly, and MCM 다이어리 daily. Most recently, Bye Boo 바이부 was updated on October 30, 2026 and MCM 다이어리 on October 30, 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.*