# 교대달력 ShiftCalendar vs Alarm Clock(KKAEUM)

The clearest difference is price: 교대달력 ShiftCalendar at Free against Alarm Clock(KKAEUM)'s $0.99. 교대달력 ShiftCalendar also leads on update cadence (every 2 weeks vs every 38 months). Alarm Clock(KKAEUM)'s advantage is ads (none vs shown) and review sentiment (75% vs 67%). On in-app purchases, device support and iOS requirement there is nothing between them.

교대달력 ShiftCalendar is free to download; Alarm Clock(KKAEUM) costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

교대달력 ShiftCalendar ships an update every 2 weeks, Alarm Clock(KKAEUM) every 38 months. The most recent releases landed on October 24, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | 교대달력 ShiftCalendar | Alarm Clock(KKAEUM) |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.6 (5 ratings)](https://appshunter.io/ios/app/shiftcalendar/id1010170381/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 66.7% of reviews | **75.0% of reviews** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 2 weeks** | Every 38 months |
| Monetization | **Ad-supported** | Paid |
| Size | 18 MB | 34 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Park Seung Yun](https://appshunter.io/developer/526364312) | [Bill Kim](https://appshunter.io/developer/331392505) |

## What reviewers say

### 교대달력 ShiftCalendar

[App page](https://appshunter.io/ios/app/shiftcalendar/id1010170381)

Manage your rotating work schedule with this calendar app. It allows for custom work types, displays lunar dates and holidays, and tracks accumulated overtime. Over 1000 companies are already registered.

**Highlights:** Customizable shift schedules, Lunar calendar and holidays, Overtime tracking, Company registration, Personalized work types

**Features:** macOS Compatibility

**In-app purchases:** none


### Alarm Clock(KKAEUM)

[App page](https://appshunter.io/ios/app/alarm-clockkkaeum/id1068752530)

This app offers a reliable alarm experience with advanced features to prevent oversleeping. It includes smart functions like deadline setting, alarm and battery off detection, and a quick off option for daily use. A good mood mode is also available to aid in restful sleep.

**Highlights:** S-DeadLine setting function, S-Alarm Off detection function, S-Battery Off detection function, Alarm Quick Off function, Good Mood Mode for sleep, Insurance-styled alarm

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

**In-app purchases:** none


## Frequently asked questions

### Is 교대달력 ShiftCalendar free?

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

### Is Alarm Clock(KKAEUM) free?

Alarm Clock(KKAEUM) costs $0.99, with no in-app purchases.

### Do 교대달력 ShiftCalendar or Alarm Clock(KKAEUM) have ads?

교대달력 ShiftCalendar shows ads; Alarm Clock(KKAEUM) does not.

### Which is updated more often, 교대달력 ShiftCalendar or Alarm Clock(KKAEUM)?

교대달력 ShiftCalendar ships an update every 2 weeks, and Alarm Clock(KKAEUM) every 38 months. Most recently, 교대달력 ShiftCalendar was updated on October 24, 2026 and Alarm Clock(KKAEUM) on October 26, 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.*