# HydroMe vs HYDRA.IO

The clearest difference is in-app purchases: HydroMe at none against HYDRA.IO's 1. HYDRA.IO's advantage is ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. HYDRA.IO sells 1 in-app purchase, starting at $3.99 per month. HydroMe asks for nothing beyond the download.

HydroMe ships an update every 10 days, HYDRA.IO fortnightly. The most recent releases landed on October 15, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | HydroMe | HYDRA.IO |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 10 days** | Fortnightly |
| Size | 53 MB | 25 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Lucas Obadia](https://appshunter.io/developer/1447668792) | [Clement Dupre](https://appshunter.io/developer/1887211457) |

## What reviewers say

### HydroMe

[App page](https://appshunter.io/ios/app/hydrome-water-tracker/id6774221997)

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

**In-app purchases:** none


### HYDRA.IO

[App page](https://appshunter.io/ios/app/hydraio/id6790794354)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HYDRA Pro | $3.99 | per month |


## Frequently asked questions

### Is HydroMe free?

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

### Is HYDRA.IO free?

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

### Do HydroMe or HYDRA.IO have ads?

HydroMe shows ads; HYDRA.IO does not.

### Which is updated more often, HydroMe or HYDRA.IO?

HydroMe ships an update every 10 days, and HYDRA.IO fortnightly. Most recently, HydroMe was updated on October 15, 2026 and HYDRA.IO on October 10, 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.*