# 교대달력 ShiftCalendar vs 레드커넥트

The clearest difference is ads: 레드커넥트 at none against 교대달력 ShiftCalendar's shown. 레드커넥트 also leads on review sentiment (97% vs 67%) and monetization model (free vs ad-supported). 교대달력 ShiftCalendar's advantage is update cadence (every 2 weeks vs every 6 weeks). On price, rating, 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.

On the App Store both sit at effectively the same score — 4.6 for 교대달력 ShiftCalendar against 4.6 for 레드커넥트. Both are backed by a comparable volume of ratings — 5 and 20 respectively. Written reviews are what separate them: 67% of 교대달력 ShiftCalendar's written reviews are positive against 97% of 레드커넥트's.

교대달력 ShiftCalendar ships an update every 2 weeks, 레드커넥트 every 6 weeks. The most recent releases landed on June 11, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | 교대달력 ShiftCalendar | 레드커넥트 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (5 ratings)](https://appshunter.io/ios/app/shiftcalendar/id1010170381/reviews) | [4.6 (20 ratings)](https://appshunter.io/ios/app/300/id1481548384/reviews) |
| Number of ratings | 5 | **20** |
| Positive reviews | 66.7% of reviews | **97.2% of reviews** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 2 weeks** | Every 6 weeks |
| Monetization | Ad-supported | **Free** |
| Size | 18 MB | 59 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Park Seung Yun](https://appshunter.io/developer/526364312) | [대한적십자사](https://appshunter.io/developer/478240171) |

## 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


### 레드커넥트

[App page](https://appshunter.io/ios/app/300/id1481548384)

This app streamlines the blood donation process, allowing users to easily book appointments, track their blood's journey, and access health reports. It offers a transparent and convenient way to contribute to blood donation.

**Highlights:** Book blood donation appointments, Track blood journey from donation to completion, Access health reports and blood test results, Find nearby donation centers, Complete electronic questionnaires, View blood inventory status

**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 레드커넥트 free?

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

### Which has better reviews, 교대달력 ShiftCalendar or 레드커넥트?

교대달력 ShiftCalendar and 레드커넥트 are both rated 4.6 out of 5 on the App Store, from 5 and 20 ratings respectively.

### Do 교대달력 ShiftCalendar or 레드커넥트 have ads?

교대달력 ShiftCalendar shows ads; 레드커넥트 does not.

### Which is updated more often, 교대달력 ShiftCalendar or 레드커넥트?

교대달력 ShiftCalendar ships an update every 2 weeks, and 레드커넥트 every 6 weeks. Most recently, 교대달력 ShiftCalendar was updated on June 11, 2026 and 레드커넥트 on September 27, 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.*