# Marine Barometer vs Professional Barometer

The clearest difference is in-app purchases: Marine Barometer at none against Professional Barometer's 3. Marine Barometer also leads on ads (none vs shown) and review sentiment (78% vs 45%). On price, ratings volume and device support there is nothing between them.

Both are free to download. Professional Barometer sells 3 in-app purchases, starting at $1.99 per month. Marine Barometer asks for nothing beyond the download.

Marine Barometer holds the better App Store score, 4.5 against 4.3. Both are backed by a comparable volume of ratings — 33 and 13 respectively. Written reviews point the same way: 78% of Marine Barometer's written reviews are positive against 45% of Professional Barometer's.

Marine Barometer ships an update every 15 months, Professional Barometer every 42 months. The most recent releases landed on October 3, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Marine Barometer | Professional Barometer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (33 ratings)](https://appshunter.io/ios/app/marine-barometer/id1370744934/reviews)** | [4.3 (13 ratings)](https://appshunter.io/ios/app/professional-barometer/id1488299474/reviews) |
| Number of ratings | **33** | 13 |
| Positive reviews | **77.8% of reviews** | 45.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 15 months** | Every 42 months |
| Monetization | **Free** | Ad-supported |
| Size | 38 MB | 29 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Starpath Corp](https://appshunter.io/developer/1345556660) | [FFZ srl](https://appshunter.io/developer/533499912) |

## What reviewers say

### Marine Barometer

[App page](https://appshunter.io/ios/app/marine-barometer/id1370744934)

This app provides accurate atmospheric pressure readings for mariners, allowing them to manually save readings with location and time data. It explains sea level pressure calculation and offers calibration checks with adjustable sensor offsets.

**Highlights:** Accurate atmospheric pressure readings, Manual saving of pressure, location, and time, Sensor offset adjustment, Sea level pressure explanation, Calibration check instructions, Multiple pressure unit options

**Features:** Vision Pro support

**In-app purchases:** none


### Professional Barometer

[App page](https://appshunter.io/ios/app/professional-barometer/id1488299474)

This app provides real-time atmospheric pressure trends to forecast weather changes. It offers precise readings using device sensors and remote weather stations, displaying forecasts, temperature, and humidity. Users can also capture and share photos with superimposed weather data.

**Highlights:** Real-time atmospheric pressure trends, Weather forecasting, Multi-sensor data (device, GPS, remote), Analogue dial display, Temperature and humidity display, Photo capture with weather data overlay, Social media sharing

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium 1 Month | $1.99 | per month |
| Premium 6 Months | $6.99 | per 6 months |
| Premium 1 Year | $11.99 | per year |


## Frequently asked questions

### Is Marine Barometer free?

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

### Is Professional Barometer free?

Professional Barometer is free to download, with in-app purchases available.

### Which has better reviews, Marine Barometer or Professional Barometer?

Marine Barometer is rated higher. Marine Barometer averages 4.5 out of 5 from 33 ratings, while Professional Barometer averages 4.3 from 13 ratings.

### Do Marine Barometer or Professional Barometer have ads?

Professional Barometer shows ads; Marine Barometer does not.

### Which is updated more often, Marine Barometer or Professional Barometer?

Marine Barometer ships an update every 15 months, and Professional Barometer every 42 months. Most recently, Marine Barometer was updated on October 3, 2026 and Professional Barometer on October 20, 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.*