# D-Day CountDown — Check D-Day!!!

> Utility app to set and track countdowns to specific dates. (iPhone/iPad app by Si-Wan Yoon.)

- Source: https://appshunter.io/ios/app/d-day-countdown/id1518400866 (this page in markdown: same URL + `.md`)
- Developer: [Si-Wan Yoon](https://appshunter.io/developer/1493152910)
- Category: Utilities, Lifestyle
- Price: Free
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 17.0 · 8 MB
- Languages: American English, Korean
- Released: 2020-06-20
- Data updated: 2026-07-28
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/d-day-countdown/id1518400866/reviews.md

## What is D?

Set D-Day and check remain.

## Key features

- Set D-Day
- Check remaining time
- Event tracking
- Simple interface


## Frequently asked questions about D

### What is D-Day CountDown?

D-Day CountDown is a utility application designed to help users set and track countdowns to specific dates. It allows you to monitor the remaining time until important events.

### Is D-Day CountDown free to use?

Yes, D-Day CountDown is available for free. It does not require any payment to download or use its core features.

### What devices does D-Day CountDown support?

D-Day CountDown is compatible with a range of Apple devices, including the Apple Watch, iPhone, and iPad.

### How often is D-Day CountDown updated?

The app was last updated on September 22, 2025, indicating active development. The latest version is 1.3.5.

### What is the age rating for D-Day CountDown?

D-Day CountDown has an age rating of 4+, making it suitable for a wide audience.

### Does D-Day CountDown have ads?

No, D-Day CountDown is ad-free. Users can enjoy the application without any advertisements interrupting their experience.

### What is the user rating for D-Day CountDown?

D-Day CountDown has received an excellent rating of 5.0 stars based on one user review.

### When was D-Day CountDown first released?

D-Day CountDown was initially released on June 20, 2020.

## Version history (last 5 releases)

### 1.4.1 — 2026-07-27

- dark mode error was fixed

### 1.4.0 — 2026-07-23

- New Design

### 1.3.5 — 2025-09-22

- Widget update

### 1.3.4 — 2023-12-20

- New widget added.

### 1.3.3 — 2023-07-31

fix problem that doesn't update in Apple Watch.

## Apps similar to D

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Countdown](https://appshunter.io/ios/app/countdown/id1403367428) | 4.8 (179,150) | Free | Utilities |
| [Countdown App & Widget](https://appshunter.io/ios/app/countdown-app-and-widget/id1533996161) | 4.6 (2,356) | Free | Utilities |
| [Countdown Widget Timer](https://appshunter.io/ios/app/countdown-widget-timer/id1589042250) | 4.6 (450) | Free | Utilities |
| [Счетчик дней: Pretty Progress](https://appshunter.io/ios/app/pretty-progress/id1597616326) | 4.7 (2,845) | Free | Utilities |
| [Countdown Buddy](https://appshunter.io/ios/app/countdown-buddy/id1534850579) | 4.7 (23,978) | Free | Utilities |
| [Countdown Days Since & Until](https://appshunter.io/ios/app/countdown-days-since-and-until/id732814593) | 4.8 (2,342) | Free | Utilities |

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-28.*