# Marine Barometer vs Barometer for Watch

The clearest difference is in-app purchases: Marine Barometer at none against Barometer for Watch's 4. Marine Barometer also leads on rating (4.5 vs 4.2) and review sentiment (78% vs 64%). Barometer for Watch's advantage is update cadence (every 4 months vs every 15 months). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Barometer for Watch sells 4 one-off in-app purchases. Marine Barometer asks for nothing beyond the download.

Marine Barometer holds the better App Store score, 4.5 against 4.2. Both are backed by a comparable volume of ratings — 33 and 47 respectively. Written reviews point the same way: 78% of Marine Barometer's written reviews are positive against 64% of Barometer for Watch's.

Marine Barometer ships an update every 15 months, Barometer for Watch every 4 months. The most recent releases landed on August 23, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Marine Barometer | Barometer for Watch |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (33 ratings)](https://appshunter.io/ios/app/marine-barometer/id1370744934/reviews)** | [4.2 (47 ratings)](https://appshunter.io/ios/app/barometer-for-watch/id1448485995/reviews) |
| Number of ratings | 33 | **47** |
| Positive reviews | **77.8% of reviews** | 63.9% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 4 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 38 MB | 8 MB |
| Requires iOS | **12.0** | 26.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Starpath Corp](https://appshunter.io/developer/1345556660) | [Bangyan Chu](https://appshunter.io/developer/1448485994) |

## 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


### Barometer for Watch

[App page](https://appshunter.io/ios/app/barometer-for-watch/id1448485995)

This application displays atmospheric pressure, sea level pressure, and altitude using your device's built-in sensors. It also calculates the boiling point of water based on current pressure. The companion watch app includes customizable complications.

**Highlights:** Atmospheric pressure reading, Sea level pressure, Altitude measurement, Latitude and longitude, Boiling point calculation, Watch complications

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tips for coffee | $1.99 | one-time |
| Tips for Ice Cream | $2.99 | one-time |
| Tips for Pizza | $4.99 | one-time |
| Generous Tips | $10.99 | one-time |


## Frequently asked questions

### Is Marine Barometer free?

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

### Is Barometer for Watch free?

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

### Which has better reviews, Marine Barometer or Barometer for Watch?

Marine Barometer is rated higher. Marine Barometer averages 4.5 out of 5 from 33 ratings, while Barometer for Watch averages 4.2 from 47 ratings.

### Do Marine Barometer or Barometer for Watch have ads?

Neither Marine Barometer nor Barometer for Watch shows ads.

### Which is updated more often, Marine Barometer or Barometer for Watch?

Marine Barometer ships an update every 15 months, and Barometer for Watch every 4 months. Most recently, Marine Barometer was updated on August 23, 2026 and Barometer for Watch on September 28, 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.*