# Marées vs Forecast Alarm

The clearest difference is review sentiment: Forecast Alarm at 100% against Marées's 6%. Forecast Alarm also leads on price (Free vs $1.99) and update cadence (every 4 days vs every 3 weeks). Marées's advantage is in-app purchases (none vs 4) and iOS requirement (12.0 vs 16.4). On ads and device support there is nothing between them.

Forecast Alarm is free to download; Marées costs $1.99 up front. Forecast Alarm sells 4 in-app purchases, starting at $5.99 per month. Marées asks for nothing beyond the download.

Marées ships an update every 3 weeks, Forecast Alarm every 4 days. Both last shipped on October 25, 2026.

## The numbers

| Metric | Marées | Forecast Alarm |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/marees/id1636112325/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 6.3% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 54 MB | 54 MB |
| Requires iOS | **12.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Christian Guine](https://appshunter.io/developer/1636112507) | [Inia](https://appshunter.io/developer/1188753478) |

## What reviewers say

### Marées

[App page](https://appshunter.io/ios/app/marees/id1636112325)

Provides tide schedules, heights, and coefficients for over 150 French ports and some British ports. It operates autonomously, requiring internet only for updates and maps, and does not use geolocation data outside the app.

**Highlights:** Tide schedules for 150+ French ports, Tide data for British ports, Harmonic constants from Previ Mer, Autonomous operation, Customizable tide height thresholds, Local time display (summer/winter)

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

**In-app purchases:** none


### Forecast Alarm

[App page](https://appshunter.io/ios/app/forecast-alarm/id6446201122)

Receive wind alerts based on custom thresholds and notification frequency. This app monitors multiple weather models to keep you informed about wind conditions.

**Highlights:** Custom wind threshold notifications, Configurable notification frequency, Monitors Arpège, Arome, GFS, ECMWF, Icon models, Monitors NAM USA, NAM Puerto Rico, NAM Haiti models, EULA available

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Abonnement Large Mensuel | $5.99 | per month |
| Abonnement Large Plus Hebdomadaire | $8.99 | per 7 days |
| Annual Subscription | $12.99 | per year |
| Abonnement Large Annuel | $17.99 | per year |


## Frequently asked questions

### Is Marées free?

Marées costs $1.99, with no in-app purchases.

### Is Forecast Alarm free?

Forecast Alarm is free to download, with in-app purchases available.

### Do Marées or Forecast Alarm have ads?

Neither Marées nor Forecast Alarm shows ads.

### Which is updated more often, Marées or Forecast Alarm?

Marées ships an update every 3 weeks, and Forecast Alarm every 4 days. Most recently, Marées was updated on October 25, 2026 and Forecast Alarm on October 25, 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.*