# Hydra OS vs Trika

The clearest difference is iOS requirement: Hydra OS at 12.0 against Trika's 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Hydra OS ships an update every 2 months, Trika every 3 months. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Hydra OS | Trika |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Size | 52 MB | 82 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Afrihealth LTD](https://appshunter.io/developer/1536533770) | [Trika Telemedicine app](https://appshunter.io/developer/6771677668) |

## What reviewers say

### Hydra OS

[App page](https://appshunter.io/ios/app/hydra-os/id6479909238)

**Features:** macOS Compatibility

**In-app purchases:** none


### Trika

[App page](https://appshunter.io/ios/app/trika/id6771677666)

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

**In-app purchases:** none


## Frequently asked questions

### Is Hydra OS free?

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

### Is Trika free?

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

### Do Hydra OS or Trika have ads?

Neither Hydra OS nor Trika shows ads.

### Which is updated more often, Hydra OS or Trika?

Hydra OS ships an update every 2 months, and Trika every 3 months. Most recently, Hydra OS was updated on November 4, 2026 and Trika on October 31, 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.*