# Simple D vs DDays

The clearest difference is in-app purchases: DDays at none against Simple D's 1. DDays also leads on ads (none vs shown). Simple D's advantage is iOS requirement (15.0 vs 17.0). On price, update cadence and device support there is nothing between them.

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

Simple D ships an update every 3 weeks, DDays every 2 weeks. The most recent releases landed on August 13, 2026 and June 5, 2026 respectively.

## The numbers

| Metric | Simple D | DDays |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Monetization | — | Free |
| Size | 48 MB | 5 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [beeefriends](https://appshunter.io/developer/1498434318) | [Lee Jaeho](https://appshunter.io/developer/1556252425) |

## What reviewers say

### Simple D

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

**Features:** macOS Compatibility

**In-app purchases (1)**

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


### 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 Simple D free?

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

### Is DDays free?

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

### Do Simple D or DDays have ads?

Simple D shows ads; DDays does not.

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

Simple D ships an update every 3 weeks, and DDays every 2 weeks. Most recently, Simple D was updated on August 13, 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.*