# HidroObserva vs Atalayas App

The clearest difference is iOS requirement: HidroObserva at 13.0 against Atalayas App's 15.1. 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.

HidroObserva ships an update fortnightly, Atalayas App every 2 weeks. Both last shipped on October 1, 2026.

## The numbers

| Metric | HidroObserva | Atalayas App |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 weeks** |
| Size | 64 MB | 36 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Servicos e Informacoes do Brasil](https://appshunter.io/developer/1475781851) | [EXITI SOLUCOES DIGITAIS LTDA](https://appshunter.io/developer/1478842549) |

## What reviewers say

### HidroObserva

[App page](https://appshunter.io/ios/app/hidroobserva/id6449265378)

**Features:** macOS Compatibility

**In-app purchases:** none


### Atalayas App

[App page](https://appshunter.io/ios/app/atalayas-app/id6760916821)

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

**In-app purchases:** none


## Frequently asked questions

### Is HidroObserva free?

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

### Is Atalayas App free?

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

### Do HidroObserva or Atalayas App have ads?

Neither HidroObserva nor Atalayas App shows ads.

### Which is updated more often, HidroObserva or Atalayas App?

HidroObserva ships an update fortnightly, and Atalayas App every 2 weeks. Most recently, HidroObserva was updated on October 1, 2026 and Atalayas App on October 1, 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.*