# WONE App vs SIMAS OEIRAS

The clearest difference is iOS requirement: WONE App at 13.0 against SIMAS OEIRAS's 15.6. 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.

WONE App ships an update every 2 months, SIMAS OEIRAS monthly. The most recent releases landed on October 10, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | WONE App | SIMAS OEIRAS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Size | 7 MB | 45 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [EPAL EMPRESA PORTUGUESA DAS AGUAS LIVRES, S A](https://appshunter.io/developer/779443442) | [SERVICOS INTERMUNICIPALIZADOS DE AGUA E SANEAMENTO DOS MUNICIPIOS DE OEIRAS E AMADORA](https://appshunter.io/developer/1875971098) |

## What reviewers say

### WONE App

[App page](https://appshunter.io/ios/app/wone-app/id1505978733)

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

**In-app purchases:** none


### SIMAS OEIRAS

[App page](https://appshunter.io/ios/app/simas-oeiras/id6758957048)

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

**In-app purchases:** none


## Frequently asked questions

### Is WONE App free?

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

### Is SIMAS OEIRAS free?

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

### Do WONE App or SIMAS OEIRAS have ads?

Neither WONE App nor SIMAS OEIRAS shows ads.

### Which is updated more often, WONE App or SIMAS OEIRAS?

WONE App ships an update every 2 months, and SIMAS OEIRAS monthly. Most recently, WONE App was updated on October 10, 2026 and SIMAS OEIRAS on October 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.*