# Platometro vs Hydroreader

The clearest difference is in-app purchases: Platometro at none against Hydroreader's 2. Platometro also leads on iOS requirement (12.0 vs 15.6). Hydroreader's advantage is update cadence (fortnightly vs every 7 months). On price, ads and device support there is nothing between them.

Both are free to download. Hydroreader sells 2 in-app purchases, starting at $0.99 per month. Platometro asks for nothing beyond the download.

Platometro ships an update every 7 months, Hydroreader fortnightly. The most recent releases landed on October 2, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Platometro | Hydroreader |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Fortnightly** |
| Size | 28 MB | 57 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Asimetrix](https://appshunter.io/developer/1434770680) | [Cintelli SA](https://appshunter.io/developer/1828195800) |

## What reviewers say

### Platometro

[App page](https://appshunter.io/ios/app/platometro/id1434771161)

**Features:** macOS Compatibility

**In-app purchases:** none


### Hydroreader

[App page](https://appshunter.io/ios/app/hydroreader/id6748949693)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Suscripción Plan Pro | $0.99 | per month |
| Plan Pro Subscription | $4.99 | per month |


## Frequently asked questions

### Is Platometro free?

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

### Is Hydroreader free?

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

### Do Platometro or Hydroreader have ads?

Neither Platometro nor Hydroreader shows ads.

### Which is updated more often, Platometro or Hydroreader?

Platometro ships an update every 7 months, and Hydroreader fortnightly. Most recently, Platometro was updated on October 2, 2026 and Hydroreader on September 28, 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.*