# Barometer plus Altimeter vs Marine Barometer

The clearest difference is review sentiment: Marine Barometer at 78% against Barometer plus Altimeter's 14%. Marine Barometer also leads on rating (4.5 vs 2.7) and in-app purchases (none vs 1). Barometer plus Altimeter's advantage is update cadence (every 2 weeks vs every 15 months) and iOS requirement (8.0 vs 12.0). On price, ads and device support there is nothing between them.

Both are free to download. Barometer plus Altimeter sells 1 one-off in-app purchase. Marine Barometer asks for nothing beyond the download.

Marine Barometer holds the better App Store score, 4.5 against 2.7. That said, the two scores are not equally well evidenced: Marine Barometer has 33 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 14% of Barometer plus Altimeter's written reviews are positive against 78% of Marine Barometer's.

Barometer plus Altimeter ships an update every 2 weeks, Marine Barometer every 15 months. The most recent releases landed on October 20, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Barometer plus Altimeter | Marine Barometer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.7 (3 ratings)](https://appshunter.io/ios/app/barometer-plus-altimeter/id947902790/reviews) | **[4.5 (33 ratings)](https://appshunter.io/ios/app/marine-barometer/id1370744934/reviews)** |
| Number of ratings | 3 | **33** |
| Positive reviews | 14.3% of reviews | **77.8% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 15 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 61 MB | 38 MB |
| Requires iOS | **8.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [AFS Software](https://appshunter.io/developer/589381819) | [Starpath Corp](https://appshunter.io/developer/1345556660) |

## What reviewers say

### Barometer plus Altimeter

[App page](https://appshunter.io/ios/app/barometer-plus-altimeter/id947902790)

This app uses your device's air pressure sensor to display current, maximum, and minimum barometric pressure. It can also function as an altimeter. Accuracy can be improved by moving the sensor.

**Highlights:** Displays current barometric pressure, Shows maximum and minimum pressure, Functions as an altimeter, Utilizes device's air pressure sensor, Accuracy enhancement option

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| iAd free | $0.99 | one-time |


### 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


## Frequently asked questions

### Is Barometer plus Altimeter free?

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

### Is Marine Barometer free?

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

### Which has better reviews, Barometer plus Altimeter or Marine Barometer?

Marine Barometer is rated higher. Barometer plus Altimeter averages 2.7 out of 5 from 3 ratings, while Marine Barometer averages 4.5 from 33 ratings.

### Do Barometer plus Altimeter or Marine Barometer have ads?

Neither Barometer plus Altimeter nor Marine Barometer shows ads.

### Which is updated more often, Barometer plus Altimeter or Marine Barometer?

Barometer plus Altimeter ships an update every 2 weeks, and Marine Barometer every 15 months. Most recently, Barometer plus Altimeter was updated on October 20, 2026 and Marine Barometer on October 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.*