# D vs Simple D

The clearest difference is in-app purchases: D at none against Simple D's 1. D also leads on iOS requirement (13.0 vs 15.0). Simple D's advantage is update cadence (every 3 weeks vs every 4 months). On price, ads and device support there is nothing between them.

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

D ships an update every 4 months, Simple D every 3 weeks. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | D | Simple D |
| --- | --- | --- |
| 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** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Monetization | Ad-supported | — |
| Size | 6 MB | 48 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [EONSOFT](https://appshunter.io/developer/899851112) | [beeefriends](https://appshunter.io/developer/1498434318) |

## 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


### Simple D

[App page](https://appshunter.io/ios/app/simple-d-day/id1631871998)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads | $6.99 | one-time |


## Frequently asked questions

### Is D free?

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

### Is Simple D free?

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

### Do D or Simple D have ads?

Both D and Simple D show ads.

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

D ships an update every 4 months, and Simple D every 3 weeks. Most recently, D was updated on October 24, 2026 and Simple D on October 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.*