# D vs Datto

The clearest difference is in-app purchases: D at none against Datto's 1. D also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.0). Datto's advantage is ads (none vs shown). On price and update cadence there is nothing between them.

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

D ships an update every 3 days, Datto every 2 days. The most recent releases landed on September 21, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | D | Datto |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/datto-countdown-widget/id6796972154/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 days | **Every 2 days** |
| Monetization | — | Free with in-app purchases |
| Size | 52 MB | 3 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [CodeSand Co. Ltd.](https://appshunter.io/developer/1896764307) | [Minari Taniguchi](https://appshunter.io/developer/6796972156) |

## What reviewers say

### D

[App page](https://appshunter.io/ios/app/d-day-keep-countdown-widget/id6772022931)

**In-app purchases:** none


### Datto

[App page](https://appshunter.io/ios/app/datto-countdown-widget/id6796972154)

This app displays the number of days remaining until important dates directly on your Home Screen via a widget. It offers customizable colors and themes to match your device. Additional features like unlimited events and milestone reminders are available with a one-time purchase.

**Highlights:** Home screen countdown widget, Customizable colors and themes, Unlimited events (Pro), Repeating events (Pro), Milestone reminders (Pro), iCloud sync (Pro)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Datto Pro | $3.99 | one-time |


## Frequently asked questions

### Is D free?

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

### Is Datto free?

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

### Do D or Datto have ads?

D shows ads; Datto does not.

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

D ships an update every 3 days, and Datto every 2 days. Most recently, D was updated on September 21, 2026 and Datto on September 30, 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.*