# SISCORAR vs Geomar

The clearest difference is update cadence: Geomar at every 10 days against SISCORAR's every 12 months. Geomar also leads on review sentiment (100% vs 80%). SISCORAR's advantage is iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and monetization model there is nothing between them.

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

SISCORAR ships an update every 12 months, Geomar every 10 days. The most recent releases landed on October 15, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | SISCORAR | Geomar |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 80.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 10 days** |
| Monetization | Free | Free |
| Size | 723 MB | 44 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | +17 |
| Developer | [Centro de Hidrografia da Marinha](https://appshunter.io/developer/1532680426) | [Irineu Antunes](https://appshunter.io/developer/1890734508) |

## What reviewers say

### SISCORAR

[App page](https://appshunter.io/ios/app/siscorar/id1532680424)

This mobile application provides offline tide current predictions for specific coastal areas in Brazil. It offers interactive visualizations of currents, allowing users to adjust speed and thickness, and supports GPS positioning. Predictions can be generated for dates ranging from 1500 to 2500.

**Highlights:** Offline functionality, Predictive forecasting (1500-2500), Interactive current visualization, Adjustable current speed and thickness, GPS positioning, Day/Night modes

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

**In-app purchases:** none


### Geomar

[App page](https://appshunter.io/ios/app/geomar/id6761667252)

Real-time GPS navigation with offline nautical charts for coastal and oceanic voyages. Plan, edit, and follow routes directly on the map with a fast and lightweight interface. Reliable at sea without internet dependency.

**Highlights:** Real-time GPS tracking, Offline nautical charts, Simplified route creation, Fast and lightweight interface, Reliable sea navigation, Professional chartplotter

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

**In-app purchases:** none


## Frequently asked questions

### Is SISCORAR free?

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

### Is Geomar free?

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

### Do SISCORAR or Geomar have ads?

Neither SISCORAR nor Geomar shows ads.

### Which is updated more often, SISCORAR or Geomar?

SISCORAR ships an update every 12 months, and Geomar every 10 days. Most recently, SISCORAR was updated on October 15, 2026 and Geomar on October 18, 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.*