# Hydra vs Docarus

The clearest difference is in-app purchases: Hydra at none against Docarus's 3. Hydra also leads on device support (3 vs 1) and iOS requirement (13.0 vs 17.0). Docarus's advantage is update cadence (every 3 days vs every 2 months). On price and ads there is nothing between them.

Both are free to download. Docarus sells 3 in-app purchases, starting at $6.99 per month. Hydra asks for nothing beyond the download.

Hydra ships an update every 2 months, Docarus every 3 days. The most recent releases landed on October 7, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Hydra | Docarus |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 days** |
| Size | 53 MB | 27 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [GoApp s.r.l.](https://appshunter.io/developer/435482060) | [Aliaksandr Dudzinski](https://appshunter.io/developer/1890399933) |

## What reviewers say

### Hydra

[App page](https://appshunter.io/ios/app/hydra/id1465392538)

**Features:** macOS Compatibility

**In-app purchases:** none


### Docarus

[App page](https://appshunter.io/ios/app/docarus-documents-organizer/id6761782909)

**Features:** Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Docarus Pro — Monthly | $6.99 | per month |
| Docarus Pro — Yearly | $29.99 | per year |
| Docarus Pro — Lifetime | $14.99 | one-time |


## Frequently asked questions

### Is Hydra free?

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

### Is Docarus free?

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

### Do Hydra or Docarus have ads?

Neither Hydra nor Docarus shows ads.

### Which is updated more often, Hydra or Docarus?

Hydra ships an update every 2 months, and Docarus every 3 days. Most recently, Hydra was updated on October 7, 2026 and Docarus on October 17, 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.*