# D vs Mosab Headry

The clearest difference is ads: Mosab Headry at none against D's shown. D's advantage is iOS requirement (13.0 vs 16.4). On price, update cadence, 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.

D ships an update every 4 months, Mosab Headry every 2 months. The most recent releases landed on October 24, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | D | Mosab Headry |
| --- | --- | --- |
| 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 | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Ad-supported | — |
| Size | 6 MB | 55 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [EONSOFT](https://appshunter.io/developer/899851112) | [ZENAT Online LTD](https://appshunter.io/developer/1708032561) |

## 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


### Mosab Headry

[App page](https://appshunter.io/ios/app/mosab-headry/id6747943317)

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

**In-app purchases:** none


## Frequently asked questions

### Is D free?

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

### Is Mosab Headry free?

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

### Do D or Mosab Headry have ads?

D shows ads; Mosab Headry does not.

### Which is updated more often, D or Mosab Headry?

D ships an update every 4 months, and Mosab Headry every 2 months. Most recently, D was updated on October 24, 2026 and Mosab Headry on October 6, 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.*