# Hidrográfico + vs Riska

The clearest difference is update cadence: Riska at every 4 days against Hidrográfico +'s every 6 months. Hidrográfico +'s advantage is iOS requirement (12.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Hidrográfico + ships an update every 6 months, Riska every 4 days. The most recent releases landed on September 27, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Hidrográfico + | Riska |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 4 days** |
| Size | 76 MB | 31 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Instituto Hidrografico](https://appshunter.io/developer/1587181391) | [Ecosnyp OÜ](https://appshunter.io/developer/1896123095) |

## What reviewers say

### Hidrográfico +

[App page](https://appshunter.io/ios/app/hidrografico-plus/id1587181389)

**Features:** macOS Compatibility

**In-app purchases:** none


### Riska

[App page](https://appshunter.io/ios/app/riska/id6765903652)

**In-app purchases:** none


## Frequently asked questions

### Is Hidrográfico + free?

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

### Is Riska free?

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

### Do Hidrográfico + or Riska have ads?

Neither Hidrográfico + nor Riska shows ads.

### Which is updated more often, Hidrográfico + or Riska?

Hidrográfico + ships an update every 6 months, and Riska every 4 days. Most recently, Hidrográfico + was updated on September 27, 2026 and Riska on September 29, 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.*