# Hydra vs AVA Assistant

The clearest difference is in-app purchases: Hydra at none against AVA Assistant's 1. Hydra also leads on iOS requirement (12.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. AVA Assistant sells 1 in-app purchase, starting at $5.99 per month. Hydra asks for nothing beyond the download.

## The numbers

| Metric | Hydra | AVA Assistant |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 2 weeks |
| Size | 32 MB | 4 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Instalane Internet Private Limited](https://appshunter.io/developer/1739626561) | [Andranik Ghazaryan](https://appshunter.io/developer/6798785901) |

## What reviewers say

### Hydra

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

**In-app purchases:** none


### AVA Assistant

[App page](https://appshunter.io/ios/app/ava-assistant/id6798785899)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AVA Premium | $5.99 | per month |


## Frequently asked questions

### Is Hydra free?

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

### Is AVA Assistant free?

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

### Do Hydra or AVA Assistant have ads?

Neither Hydra nor AVA Assistant 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.*