Comparison

Celsius Thermometer Plus vs Professional Barometer

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Celsius Thermometer Plus

This app measures ambient temperature using GPS and displays it in Celsius, with a converter to Fahrenheit. It also includes a barometer and sunrise/sunset times. Useful for checking outdoor conditions and planning outfits.

Highlights
  • Ambient temperature measurement via GPS
  • Celsius to Fahrenheit conversion calculator
  • Barometric pressure sensor function
  • Sunrise and sunset time display
  • Temperature badge indicator
Features
Read full description

The simple free digital thermometer application that measures the ambient temperature of the current location measured by GPS and displays it in degrees Celsius. The conversion calculator from Celsius to Fahrenheit with formula. Celsius temperature is indicated in the badge (below zero is 1000, 1005 is -5 ℃). Barometric function by pressure sensor (iPhone 6 / Plus or later). Because it is outdoor temperature rather than indoor temperature, it is a reference for outfit clothes. Some areas are excluded. Displays sunrise time and sunset time.

About

Professional Barometer

This app provides real-time atmospheric pressure trends to forecast weather changes. It offers precise readings using device sensors and remote weather stations, displaying forecasts, temperature, and humidity. Users can also capture and share photos with superimposed weather data.

Highlights
  • Real-time atmospheric pressure trends
  • Weather forecasting
  • Multi-sensor data (device, GPS, remote)
  • Analogue dial display
  • Temperature and humidity display
  • Photo capture with weather data overlay
  • Social media sharing
Features
Read full description

Turn your iPhone into a true professional barometer and monitor atmospheric pressure in real time to track changing weather conditions. The app combines data from your device's pressure sensor, GPS location and information from nearby weather stations to provide reliable, constantly updated measurements. A COMPLETE BAROMETER View atmospheric pressure through an elegant analog dial, with several styles to choose from. You can display values in the main measurement units: hPa, mbar, inHg and mmHg. In addition to atmospheric pressure, you can also check: - Temperature - Humidity - Pressure trend over the last 24 hours - GPS location on the map - Weather condition trends PRESSURE GRAPH Keep track of atmospheric pressure over the last 24 hours with a practical graph, making it easy to quickly identify changes and trends. WEATHER PHOTOS One of the app's most original features is the ability to take photos with weather data overlaid on them. Customize your photos with information such as pressure, temperature, humidity and location, and apply special effects triggered by specific weather conditions. Images can be easily saved and shared via WhatsApp, Facebook, Instagram, email and other services. An elegant, complete and feature-rich barometer designed for anyone who wants to keep atmospheric pressure, weather conditions and environmental data at hand, directly on their iPhone. OPTIONAL SUBSCRIPTION If you wish, you can activate the Premium version to remove advertising and the watermark from photos: 1 month, 6 months or 1 year. Payment will be charged to your Apple Account when the purchase is confirmed. The subscription automatically renews unless cancelled at least 24 hours before the end of the current period. You can manage or disable it in your account settings. Privacy Policy: https://www.mailant.it/privacyapp/privacyBarometro.htm Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Celsius Thermometer Plus1 screens
Professional Barometer4 screens

Verdict

The call

The clearest difference is rating: Celsius Thermometer Plus at 4.7 against Professional Barometer's 4.3. Celsius Thermometer Plus also leads on update cadence (every 7 months vs every 42 months) and ratings volume (54 vs 13). On price, review sentiment, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Celsius Thermometer Plus sells 1 one-off in-app purchase and Professional Barometer sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Celsius Thermometer Plus holds the better App Store score, 4.7 against 4.3. Both are backed by a comparable volume of ratings — 54 and 13 respectively. Written reviews complicate that: 38% of Celsius Thermometer Plus's written reviews are positive against 45% of Professional Barometer's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Celsius Thermometer Plus ships an update every 7 months, Professional Barometer every 42 months. The most recent releases landed on October 14, 2026 and October 13, 2026 respectively.

Scorecard4 real differences · 6 level
Celsius Thermometer Plus versus Professional Barometer: the parameters behind the verdict, then further details
ParameterCelsius Thermometer PlusProfessional Barometer
PriceFreeFree
Rating4.7 (54 ratings) — better4.3 (13 ratings)
Positive reviews38.5% of reviews45.0% of reviews — better
Number of ratings54 — better13
Update frequencyEvery 7 months — betterEvery 42 months
AdsYesYes
In-app purchasesYesYes
MonetizationAd-supportedAd-supported
DevicesiPhone, iPodiPhone, iPad
Requires iOS13 — better17.0
Further details — not scored
Size11 MB29 MB
Age rating4+4+
DeveloperSHIGETO TAKAGIFFZ srl

Customer experience

Celsius Thermometer Plus

All ratings54 ratings
Positive92.6%
Neutral5.6%
Negative1.9%
Written reviews26 reviews
Positive38.5%
Neutral11.5%
Negative50.0%

Professional Barometer

All ratings13 ratings
Positive76.9%
Neutral7.7%
Negative15.4%
Written reviews40 reviews
Positive45.0%
Neutral15.0%
Negative40.0%

In-app purchases

1 purchases

Celsius Thermometer Plus

One-time1
  • Remove Ads$1.99
3 purchases

Professional Barometer

Subscriptions3
  • Premium 1 Month$1.991 Month
  • Premium 6 Months$6.996 Months
  • Premium 1 Year$11.991 Year

Questions

Is Celsius Thermometer Plus free?
Celsius Thermometer Plus is free to download, with in-app purchases available.
Is Professional Barometer free?
Professional Barometer is free to download, with in-app purchases available.
Which has better reviews, Celsius Thermometer Plus or Professional Barometer?
Celsius Thermometer Plus is rated higher. Celsius Thermometer Plus averages 4.7 out of 5 from 54 ratings, while Professional Barometer averages 4.3 from 13 ratings.
Do Celsius Thermometer Plus or Professional Barometer have ads?
Both Celsius Thermometer Plus and Professional Barometer show ads.
Which is updated more often, Celsius Thermometer Plus or Professional Barometer?
Celsius Thermometer Plus ships an update every 7 months, and Professional Barometer every 42 months. Most recently, Celsius Thermometer Plus was updated on October 14, 2026 and Professional Barometer on October 13, 2026.

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