# D vs DDays

The clearest difference is review sentiment: DDays at 100% against D's 60%. DDays also leads on ads (none vs shown) and update cadence (every 2 weeks vs every 4 months). D's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 17.0). On price and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

D ships an update every 4 months, DDays every 2 weeks. The most recent releases landed on August 15, 2026 and June 5, 2026 respectively.

## The numbers

| Metric | D | DDays |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/d-day-counter/id906689489/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 60.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Every 2 weeks** |
| Monetization | Ad-supported | **Free** |
| Size | 6 MB | 5 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [EONSOFT](https://appshunter.io/developer/899851112) | [Lee Jaeho](https://appshunter.io/developer/1556252425) |

## What reviewers say

### D

[App page](https://appshunter.io/ios/app/d-day-counter/id906689489)

Easily track important dates and countdown to special events. Calculate the days remaining until anniversaries, birthdays, or any significant milestone. Never forget a special occasion again with this simple event reminder.

**Highlights:** Countdown to anniversaries, Track birthday countdowns, Calculate days until events, Remember special occasions, Personal event tracking

**Features:** Vision Pro support

**In-app purchases:** none


### DDays

[App page](https://appshunter.io/ios/app/ddays/id6469691671)

Track important upcoming events with timely notifications. View countdowns directly on your home screen and lock screen widgets.

**Highlights:** D-day tracking, Advance notifications, Home screen widget, Lock screen widget, Live activity display

**In-app purchases:** none


## Frequently asked questions

### Is D free?

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

### Is DDays free?

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

### Do D or DDays have ads?

D shows ads; DDays does not.

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

D ships an update every 4 months, and DDays every 2 weeks. Most recently, D was updated on August 15, 2026 and DDays on June 5, 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.*