# +1 vs HidroObserva

The clearest difference is update cadence: HidroObserva at fortnightly against +1's every 14 months. HidroObserva also leads on device support and iOS requirement (13.0 vs 15.0). On price 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.

+1 ships an update every 14 months, HidroObserva fortnightly. The most recent releases landed on September 17, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | +1 | HidroObserva |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | Every 14 months | **Fortnightly** |
| Size | 47 MB | 64 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | — | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Matheus Falcao](https://appshunter.io/developer/963841238) | [Servicos e Informacoes do Brasil](https://appshunter.io/developer/1475781851) |

## What reviewers say

### +1

[App page](https://appshunter.io/ios/app/plus-1/id6444918844)

**In-app purchases:** none


### HidroObserva

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is +1 free?

+1 is free to download, with no in-app purchases.

### Is HidroObserva free?

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

### Which is updated more often, +1 or HidroObserva?

+1 ships an update every 14 months, and HidroObserva fortnightly. Most recently, +1 was updated on September 17, 2026 and HidroObserva on September 12, 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.*