# Heat Index Pro vs Marées

The clearest difference is rating: Heat Index Pro at 3.9 against Marées's 1.0. Heat Index Pro also leads on review sentiment (25% vs 6%) and ratings volume (9 vs 1). Marées's advantage is price ($1.99 vs $2.99) and iOS requirement (12.0 vs 26.0). On update cadence, ads, in-app purchases and monetization model there is nothing between them.

Heat Index Pro costs $2.99 and Marées $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Heat Index Pro holds the better App Store score, 3.9 against 1.0. That said, the two scores are not equally well evidenced: Heat Index Pro has 9 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 25% of Heat Index Pro's written reviews are positive against 6% of Marées's.

Heat Index Pro ships an update every 5 weeks, Marées every 3 weeks. The most recent releases landed on November 7, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Heat Index Pro | Marées |
| --- | --- | --- |
| Price | $2.99 | **$1.99** |
| Rating | **[3.9 (9 ratings)](https://appshunter.io/ios/app/heat-index-pro/id1480149233/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/marees/id1636112325/reviews) |
| Number of ratings | **9** | 1 |
| Positive reviews | **25.0% of reviews** | 6.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Monetization | Paid | Paid |
| Size | 13 MB | 54 MB |
| Requires iOS | 26.0 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [LionsApp di Nallbati Elton](https://appshunter.io/developer/432915499) | [Christian Guine](https://appshunter.io/developer/1636112507) |

## What reviewers say

### Heat Index Pro

[App page](https://appshunter.io/ios/app/heat-index-pro/id1480149233)

This tool calculates the "felt air temperature" by combining air temperature and relative humidity using a specific scientific equation. It provides current weather conditions and allows users to search for and save favorite locations worldwide.

**Highlights:** Heat Index calculation (Rothfusz equation), Current temperature and humidity, Choice of Celsius, Fahrenheit, and Kelvin, Map current location, Search and save unlimited favorite cities, Intuitive graphics and ease of use

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Heat Index Pro free?

Heat Index Pro costs $2.99, with no in-app purchases.

### Is Marées free?

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

### Which has better reviews, Heat Index Pro or Marées?

Heat Index Pro is rated higher. Heat Index Pro averages 3.9 out of 5 from 9 ratings, while Marées averages 1.0 from 1 ratings.

### Do Heat Index Pro or Marées have ads?

Neither Heat Index Pro nor Marées shows ads.

### Which is updated more often, Heat Index Pro or Marées?

Heat Index Pro ships an update every 5 weeks, and Marées every 3 weeks. Most recently, Heat Index Pro was updated on November 7, 2026 and Marées on November 3, 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.*