# When vs SD Backup

The clearest difference is iOS requirement: When at 16.0 against SD Backup's 26.0. On price, ads, 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.

## The numbers

| Metric | When | SD Backup |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/when-event-countdown/id6446132386/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 days | — |
| Monetization | Free | — |
| Size | 3 MB | 16 MB |
| Requires iOS | **16.0** | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Clark Dinnison](https://appshunter.io/developer/1645460140) | [小祯 汪](https://appshunter.io/developer/1164848834) |

## What reviewers say

### When

[App page](https://appshunter.io/ios/app/when-event-countdown/id6446132386)

Never forget important dates again with this simple event tracking tool. Easily add and customize upcoming events like birthdays and anniversaries to see them all at a glance. Stay organized and ensure you never miss a moment that matters.

**Highlights:** Track birthdays and anniversaries, Countdown to concerts and vacations, Simple event adding, Customizable with emojis, Clear event overview

**Features:** macOS Compatibility

**In-app purchases:** none


### SD Backup

[App page](https://appshunter.io/ios/app/sd-backup-nas-and-sftp/id6806176361)

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

**In-app purchases:** none


## Frequently asked questions

### Is When free?

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

### Is SD Backup free?

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

### Do When or SD Backup have ads?

Neither When nor SD Backup shows ads.

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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.*