# 올힘 (All HYM) vs 마이북

The clearest difference is update cadence: 마이북 at every 4 weeks against 올힘 (All HYM)'s every 2 months. 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.

올힘 (All HYM) ships an update every 2 months, 마이북 every 4 weeks. The most recent releases landed on October 15, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | 올힘 (All HYM) | 마이북 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 weeks** |
| Monetization | Free | — |
| Size | 13 MB | 8 MB |
| Requires iOS | **12.0** | 12.4 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [MI SEON PARK](https://appshunter.io/developer/598527439) | [linco](https://appshunter.io/developer/1503435551) |

## What reviewers say

### 올힘 (All HYM)

[App page](https://appshunter.io/ios/app/all-hym/id1416430291)

This app facilitates seamless communication and management for institutions and their members. It offers secure 1:1 chat, group announcements, and community forums for easy interaction and organization.

**Highlights:** 1:1 Chat for members and teachers, Group announcements for institutions, Team-based community forums, Organization management with teams, Multiple teacher accounts, Individual and team announcements

**Features:** macOS Compatibility

**In-app purchases:** none


### 마이북

[App page](https://appshunter.io/ios/app/mibook/id1666480995)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 올힘 (All HYM) free?

올힘 (All HYM) is free to download, with no in-app purchases.

### Is 마이북 free?

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

### Do 올힘 (All HYM) or 마이북 have ads?

Neither 올힘 (All HYM) nor 마이북 shows ads.

### Which is updated more often, 올힘 (All HYM) or 마이북?

올힘 (All HYM) ships an update every 2 months, and 마이북 every 4 weeks. Most recently, 올힘 (All HYM) was updated on October 15, 2026 and 마이북 on October 7, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*