# Marine Barometer vs Torr

The clearest difference is in-app purchases: Marine Barometer at none against Torr's 2. Marine Barometer also leads on ads (none vs shown) and review sentiment (78% vs 57%). Torr's advantage is update cadence (every 5 days vs every 15 months) and ratings volume (181 vs 33). On price, rating and device support there is nothing between them.

Both are free to download. Torr sells 2 in-app purchases, starting at $1.99 per month. Marine Barometer asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.5 for Marine Barometer against 4.4 for Torr. That said, the two scores are not equally well evidenced: Torr has 181 ratings behind it against 33, so its average is the more settled of the two. Written reviews are what separate them: 78% of Marine Barometer's written reviews are positive against 57% of Torr's.

Marine Barometer ships an update every 15 months, Torr every 5 days. The most recent releases landed on October 24, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Marine Barometer | Torr |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (33 ratings)](https://appshunter.io/ios/app/marine-barometer/id1370744934/reviews)** | [4.4 (181 ratings)](https://appshunter.io/ios/app/torr-barometer-altimeter/id1586976470/reviews) |
| Number of ratings | 33 | **181** |
| Positive reviews | **77.8% of reviews** | 57.4% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 15 months | **Every 5 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 38 MB | 22 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Starpath Corp](https://appshunter.io/developer/1345556660) | [SoyApps](https://appshunter.io/developer/1493114217) |

## 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


### Torr

[App page](https://appshunter.io/ios/app/torr-barometer-altimeter/id1586976470)

This app provides real-time barometric pressure and altitude readings, with 10-day forecasts and migraine alerts. It automatically logs historical data and supports CSV export, offering offline functionality for outdoor enthusiasts and researchers.

**Highlights:** Real-time barometer and altimeter, 10-day pressure and weather forecasts, Migraine and weather sensitivity alerts, Automatic history logging, CSV data export, Offline functionality, Apple Watch support

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support, iPhone Duo support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro (Monthly) | $1.99 | per month |
| Pro (Yearly) | $19.99 | per year |


## Frequently asked questions

### Is Marine Barometer free?

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

### Is Torr free?

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

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

Marine Barometer is rated higher. Marine Barometer averages 4.5 out of 5 from 33 ratings, while Torr averages 4.4 from 181 ratings.

### Do Marine Barometer or Torr have ads?

Torr shows ads; Marine Barometer does not.

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

Marine Barometer ships an update every 15 months, and Torr every 5 days. Most recently, Marine Barometer was updated on October 24, 2026 and Torr on October 30, 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.*