# Cat Identifier vs Hydra

The clearest difference is in-app purchases: Hydra at none against Cat Identifier's 2. Hydra also leads on iOS requirement (12.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Cat Identifier sells 2 in-app purchases, starting at $6.99 per 7 days. Hydra asks for nothing beyond the download.

## The numbers

| Metric | Cat Identifier | Hydra |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 7 months | — |
| Size | 39 MB | 32 MB |
| Requires iOS | 17.0 | **12.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Maxim Sidorov](https://appshunter.io/developer/1643324508) | [Instalane Internet Private Limited](https://appshunter.io/developer/1739626561) |

## What reviewers say

### Cat Identifier

[App page](https://appshunter.io/ios/app/cat-identifier/id6670794963)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly subscription | $6.99 | per 7 days |
| Yearly Premium | $39.99 | per year |


### Hydra

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

**In-app purchases:** none


## Frequently asked questions

### Is Cat Identifier free?

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

### Is Hydra free?

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

### Do Cat Identifier or Hydra have ads?

Neither Cat Identifier 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.*