# When vs Hydra

The clearest difference is iOS requirement: Hydra at 12.0 against When's 16.0. 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 | Hydra |
| --- | --- | --- |
| 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 | 32 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Clark Dinnison](https://appshunter.io/developer/1645460140) | [Instalane Internet Private Limited](https://appshunter.io/developer/1739626561) |

## 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


### Hydra

[App page](https://appshunter.io/ios/app/hydra-water-drinking-tracker/id6738758531)

**In-app purchases:** none


## Frequently asked questions

### Is When free?

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

### Is Hydra free?

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

### Do When or Hydra have ads?

Neither When nor Hydra 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.*