# Hydra vs Ventro Core

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

Both are free to download. Ventro Core sells 2 in-app purchases, starting at $14.99 per month. Hydra asks for nothing beyond the download.

Hydra ships an update every 3 days, Ventro Core weekly. The most recent releases landed on October 28, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Hydra | Ventro Core |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Weekly |
| Size | 20 MB | 106 MB |
| Requires iOS | **15.1** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Utkarsh Sundkar](https://appshunter.io/developer/1864110504) | [Keven Guevara Perez](https://appshunter.io/developer/1726697295) |

## What reviewers say

### Hydra

[App page](https://appshunter.io/ios/app/hydra-water-tracking-app/id6758148779)

**Features:** macOS Compatibility

**In-app purchases:** none


### Ventro Core

[App page](https://appshunter.io/ios/app/ventro-core/id6760636179)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $14.99 | per month |
| Premium Yearly | $58.90 | per year |


## Frequently asked questions

### Is Hydra free?

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

### Is Ventro Core free?

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

### Do Hydra or Ventro Core have ads?

Neither Hydra nor Ventro Core shows ads.

### Which is updated more often, Hydra or Ventro Core?

Hydra ships an update every 3 days, and Ventro Core weekly. Most recently, Hydra was updated on October 28, 2026 and Ventro Core on October 24, 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.*