# Marine Barometer vs Temcon

The clearest difference is rating: Marine Barometer at 4.5 against Temcon's 2.5. Marine Barometer also leads on in-app purchases (none vs 2) and ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Temcon sells 2 in-app purchases, starting at $4.99 per month. Marine Barometer asks for nothing beyond the download.

Marine Barometer holds the better App Store score, 4.5 against 2.5. That said, the two scores are not equally well evidenced: Marine Barometer has 33 ratings behind it against 2, so its average is the more settled of the two.

Marine Barometer ships an update every 15 months, Temcon every 13 months. The most recent releases landed on October 3, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Marine Barometer | Temcon |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (33 ratings)](https://appshunter.io/ios/app/marine-barometer/id1370744934/reviews)** | [2.5 (2 ratings)](https://appshunter.io/ios/app/temcon-temperature-conver/id6742364129/reviews) |
| Number of ratings | **33** | 2 |
| Positive reviews | 77.8% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 15 months | **Every 13 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 38 MB | 28 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Starpath Corp](https://appshunter.io/developer/1345556660) | [kota tada](https://appshunter.io/developer/1658942612) |

## 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


### Temcon

[App page](https://appshunter.io/ios/app/temcon-temperature-conver/id6742364129)

This tool quickly converts between Celsius and Fahrenheit with an intuitive interface. It automatically saves your conversion history for easy access to past temperature data. Ideal for everyday use in cooking, science, and travel.

**Highlights:** Celsius to Fahrenheit conversion, Fahrenheit to Celsius conversion, Intuitive user interface, Automatic conversion history, Supports cooking, science, and travel needs

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ad-free for 1 month | $4.99 | per month |
| Ad-free for 1 year | $29.99 | per year |


## Frequently asked questions

### Is Marine Barometer free?

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

### Is Temcon free?

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

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

Marine Barometer is rated higher. Marine Barometer averages 4.5 out of 5 from 33 ratings, while Temcon averages 2.5 from 2 ratings.

### Do Marine Barometer or Temcon have ads?

Temcon shows ads; Marine Barometer does not.

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

Marine Barometer ships an update every 15 months, and Temcon every 13 months. Most recently, Marine Barometer was updated on October 3, 2026 and Temcon on October 8, 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.*