Marine Barometer vs cfWeather
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Marine Barometer
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.
- 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
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Marine Barometer is a barometer sensor interface that is uniquely designed to meet the needs of mariners who rely on accurate atmospheric pressure for weather routing and the evaluation of weather maps. Pressure readings can be manually saved permanently along with the latitude, longitude, and time of the reading. If a sensor offset has been applied, that value is also stored with each recorded pressure. These recorded pressures can then at the navigator's convenience be transferred to the vessel's printed logbook. The GPS sensor is accessed for latitude and longitude only. The elevation of the sensor (your iOS device that includes a barometer) above sea level must be entered manually. Elevation values from the GPS are not accurate enough for the intended application. The concept of sea level pressure is explained along with how it is determined from the sensor reading. Instructions are provided on how to check the calibration of the sensor, and a sensor offset can be applied as needed. Links to sources of accurate sea level pressure are included. Sources of accurate elevation are included for use on land. The standard units for marine applications are millibars (mb) or hectoPascals (hPa). The main pressure display can also be set to inches of mercury, millimeters of mercury, or kiloPascals. However, because the primary reference pressures that would be used to check the sensor calibration are in mb, the sensor calibration must be set using millibar units. Reference links are provided for learning more about the tactical use of pressure for weather forecasting and weather map evaluation. Discounts are offered for barometer related reference books.
cfWeather
Easily switch between Celsius and Fahrenheit temperature displays to better understand weather information. Get current weather for your location or search globally, with options for light/dark themes and saving favorite places.
- Celsius and Fahrenheit display modes
- Light and dark themes
- Current location weather
- Global location search
- Favorite locations list
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If you grew up with Fahrenheit (℉) temperature, the numbers are deep in your brain and your skin. Now visiting or living in a new country using Celsius (℃) temperature, you can't FEEL the numbers anymore. The opposite could also be true for a ℃ to ℉ transition. This app might help you! Features: - Three display mode: ℃ + ℉, ℃ only and ℉ only - Light and dark theme - Display weather information for current location (permission to access device's location required) - Search for any location in the world - Add location to favorites list Currently using open-meteo.com for weather and geo-location data. No personal data is collected or stored by this app.
Screenshots
Verdict
The clearest difference is rating: cfWeather at 5.0 against Marine Barometer's 4.5. cfWeather also leads on update cadence (every 4 days vs every 15 months). Marine Barometer's advantage is ratings volume (33 vs 2) and iOS requirement (12.0 vs 15.1). On price, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
cfWeather holds the better App Store score, 5.0 against 4.5. 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, cfWeather every 4 days. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.
| Parameter | Marine Barometer | cfWeather |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (33 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 77.8% of reviews | — |
| Number of ratings | 33 — better | 2 |
| Update frequency | Every 15 months | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 38 MB | 36 MB |
| Age rating | 4+ | 4+ |
| Developer | Starpath Corp | Zhengwei Zhu |
Customer experience
Marine Barometer
cfWeather
In-app purchases
Marine Barometer
No in-app purchases
cfWeather
No in-app purchases
Questions
Is Marine Barometer free?
Is cfWeather free?
Which has better reviews, Marine Barometer or cfWeather?
Do Marine Barometer or cfWeather have ads?
Which is updated more often, Marine Barometer or cfWeather?
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