# 레드커넥트 vs D

The clearest difference is rating: 레드커넥트 at 4.6 against D's 2.5. 레드커넥트 also leads on in-app purchases (none vs 1) and ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. D sells 1 one-off in-app purchase. 레드커넥트 asks for nothing beyond the download.

레드커넥트 holds the better App Store score, 4.6 against 2.5. That said, the two scores are not equally well evidenced: 레드커넥트 has 20 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 97% of 레드커넥트's written reviews are positive against 76% of D's.

레드커넥트 ships an update every 6 weeks, D every 5 weeks. The most recent releases landed on September 23, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | 레드커넥트 | D |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (20 ratings)](https://appshunter.io/ios/app/300/id1481548384/reviews)** | [2.5 (2 ratings)](https://appshunter.io/ios/app/d-day-widget-countdown/id1639102496/reviews) |
| Number of ratings | **20** | 2 |
| Positive reviews | **97.2% of reviews** | 76.2% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Every 5 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 59 MB | 26 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, Apple Watch |
| Age rating | 12+ | 4+ |
| Developer | [대한적십자사](https://appshunter.io/developer/478240171) | [kyulabs](https://appshunter.io/developer/1380867471) |

## What reviewers say

### 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


### D

[App page](https://appshunter.io/ios/app/d-day-widget-countdown/id1639102496)

Display important dates like anniversaries and birthdays on your home screen, lock screen, and Apple Watch. Customize with emojis and choose display options for a personalized view of your special days.

**Highlights:** Home screen widgets (small, medium, large), Lock screen widgets (inline, circular, rectangular), Apple Watch complications, Emoji customization for dates, Automatic D-Day calculation, Intuitive card-based UI

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove in-app ads | $9.99 | one-time |


## Frequently asked questions

### Is 레드커넥트 free?

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

### Is D free?

D is free to download, with in-app purchases available.

### Which has better reviews, 레드커넥트 or D?

레드커넥트 is rated higher. 레드커넥트 averages 4.6 out of 5 from 20 ratings, while D averages 2.5 from 2 ratings.

### Do 레드커넥트 or D have ads?

D shows ads; 레드커넥트 does not.

### Which is updated more often, 레드커넥트 or D?

레드커넥트 ships an update every 6 weeks, and D every 5 weeks. Most recently, 레드커넥트 was updated on September 23, 2026 and D on September 25, 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.*