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Best Temperature App Conversion

184+ iOS apps curated and reviewed

4.5 avg rating
20 free apps
Updated May 2026

Unit Converter is the household name in temperature app conversion, but it's far from the only option. We track 184+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

Top Picks for Temperature App Conversion

Unit Converter - Best Unit App#1

Unit Converter - Best Unit App by Alan Mrvica

Convert All Units and Currency
Editor's Choice
✈️ Travel
4.8😊(172K ratings)
FreeAdsIn-App Purchases
Unit Converter - Best Unit App screenshot 1
Unit Converter - Best Unit App screenshot 2
Unit Converter - Best Unit App screenshot 3
Unit Converter - Best Unit App screenshot 4
Unit Converter - Best Unit App screenshot 5
Unit Converter - Best Unit App screenshot 6

A free unit converter app optimized for iPhone and iPad, featuring 12 categories for converting various units including area, currency, data, length, and more. Includes daily currency updates for 155 world currencies and is designed for easy use. Download now for quick and accurate unit conversions.

What We Love

  • 🚀 Easy to use
  • 👍 Comprehensive conversions
  • 💡 Useful for travel and cooking
  • 🚀 Quick and efficient

Room to Improve

  • 🐛 Limited character input
  • 🐛 Difficulty with negative numbers
  • 💡 Lack of ability to quickly switch between conversions
CalConvert: Currency Converter#2

CalConvert: Currency Converter by Maple Media Apps, LLC

Calculator & Unit Conversion $
Strong Contender
✈️ Travel
4.6😞(6.4K ratings)
FreeAdsIn-App Purchases
CalConvert: Currency Converter screenshot 1
CalConvert: Currency Converter screenshot 2
CalConvert: Currency Converter screenshot 3
CalConvert: Currency Converter screenshot 4
CalConvert: Currency Converter screenshot 5
CalConvert: Currency Converter screenshot 6

Convert currencies easily and efficiently with this intuitive currency converter app. Simply input the amount and select the currencies you want to convert between, making international transactions a breeze. Download now to streamline your currency conversions.

What We Love

  • 🚀 Excellent calculator and converter
  • 👍 Easy to use and intuitive interface
  • 🔢 Large, clear numbers for good visibility
  • 💡 Comprehensive conversion options

Room to Improve

  • 🤖 Excessive, intrusive ads
  • 🔒 Locking features behind subscription paywall
  • 🐛 Bugs and glitches after recent updates
Metric Conversion tool#3

Metric Conversion tool by Wight Hat

Unit and currency converter
Worth Considering
🔍 Reference
4.8😐(15K ratings)
Free
Metric Conversion tool screenshot 1
Metric Conversion tool screenshot 2
Metric Conversion tool screenshot 3
Metric Conversion tool screenshot 4
Metric Conversion tool screenshot 5

A must-have unit conversion app with over 30,000 conversions, 160 currencies, and detailed historical records. Easily convert weights, temperatures, lengths, areas, volumes, time, angles, and more. Access nine significant digits and fractional results.

What We Love

  • 💡 Useful conversion tool
  • 👍 Easy to use and navigate
  • 🚀 Quick and efficient
  • 👍 Comprehensive coverage of conversions

Room to Improve

  • 🔊 Intrusive and loud ads
  • 🔒 Questionable privacy practices
  • 🐛 Inaccurate conversions

More Temperature App Conversion apps to explore

4
Conversion Calculator !
Conversion Calculator !
Conversion Calculator !
Currency, Temperature, Length
Free

Easily convert units of measurement with this user-friendly app. Say goodbye to complex calculations and simplify your unit conversions today!

📊 Productivity
(13K)
5
Conversion Calculator Plus
Conversion Calculator Plus
Conversion Calculator Plus
Unit Converter
Free

"Explore the ultimate Unit Converter tool with Conversion Calculator Plus – your go-to Swiss army knife for effortless unit conversions. Simplify complex calculations and streamline your work effortlessly."

📊 Productivity
(15K)
6
Thermometer++ App
Thermometer++ App
Thermometer++ App
Temperature and more
Free

An app offering real-time temperature, humidity, and pressure data using AI technology. Users can track weather conditions at their current location or any chosen location with a minimalist design and the option to view Celsius or Fahrenheit degrees. Stay prepared for any weather with this fast and accurate thermometer app!

☀️ Weather
(7K)
7
Unit Converter: Mila's Tools
Unit Converter: Mila's Tools
Unit Converter: Mila's Tools
Metric Conversion Calculator +
Free

Experience quick and easy unit conversions with a free, fast, and elegant calculator tool from Mila's Tools. Convert various units such as Area, Bits, Bytes, Length, Temperature, and more effortlessly. Try it out now for hassle-free conversions!

🔧 Utilities
(1.3K)
8
Fahrenheit Celsius Calculator
Fahrenheit Celsius Calculator
Fahrenheit Celsius Calculator
Meeting Your Conversion Needs
Free

Easily convert between Fahrenheit and Celsius with a simple calculator and access weather data for any city in both temperature scales simultaneously. Start converting now! Privacy Policy: http://privacy2.apps.skystardevelopment.comTerms of Use: http:/eula.apps.skystardevelopment.com

🔧 Utilities
(1.6K)
9
HD Thermometer ⊎
HD Thermometer ⊎
HD Thermometer ⊎
Current temperature & more
Free

Track the current temperature and weather conditions with ease using a precise thermometer application. Stay informed about the temperature wherever you are with just a tap.

☀️ Weather
(322)
10
Thermometer
Thermometer
Thermometer
Temperature & More
Free

Track temperature trends easily with this handy thermometer application. Stay informed about temperature changes and plan accordingly. Download now to stay ahead of the weather!

🔧 Utilities
(3.9K)
11
Convert Any Unit Lite
Convert Any Unit Lite
Convert Any Unit Lite
Units & Currency Converter
Free

Convert Any Unit Lite is a versatile app that simplifies unit conversions for users, offering a wide range of conversion options. Easily switch between various units for length, weight, volume, and more with a user-friendly interface. Download now to streamline your conversion needs.

✈️ Travel
(47K)
12
Body Temperature App
Body Temperature App
Body Temperature App
Body Temperature Log For Fever
Free

Track and log body temperature with symptoms using this app, allowing easy sharing with healthcare providers. Manage records for multiple individuals, sync with Apple Health, and view temperature in Celsius or Fahrenheit. Be proactive about your health - download now!

🏥 Medical
(450)
13
Conversion Calculator Units
Conversion Calculator Units
Conversion Calculator Units
Unit Conversion Calculator All
Free

This app is a handy conversion calculator with 12 categories for quickly converting units. Simplify your conversions with ease!

🔧 Utilities
(4.8K)
14
TempPro Sensor
TempPro Sensor
TempPro Sensor
by iTronics Co., Limited
Free

Receive real-time temperature and humidity data from ThermoPro thermometers, view historical data for up to a year, and receive alerts when readings go out of set range. Experience the convenience of monitoring your environment with precision - download the app now!

🌟 Lifestyle
(10K)
15
Temperature Thermometer App
Temperature Thermometer App
Temperature Thermometer App
Temperature and Humidity
Free

This application measures room temperature, humidity, and provides daily weather forecasts with features like temperature checking, humidity measurement, and ambient weather updates. Easily check indoor and outdoor temperatures and humidity levels for free, in Celsius, Fahrenheit, and Kelvin.

🔧 Utilities
(1.3K)
16
Thermometer: Body Temperature
Thermometer: Body Temperature
Thermometer: Body Temperature
Fever & Temperature Checker
Free

Track body temperature and fever symptoms easily with this intuitive app. Monitor temperature trends, record symptoms, and set reminders for medication. Stay on top of your health effortlessly.

💪 Health & Fitness
(290)
17
Temperature Converter
Temperature Converter
Temperature Converter
Celsius Fahrenheit Kelvin
Free

Transform temperatures effortlessly between Celsius, Fahrenheit, and Kelvin with this intuitive application. Experience seamless conversions and precise results with just a few taps. Try it now for quick and accurate temperature calculations!

🔧 Utilities
(6.3K)
18
MEATER® Smart Meat Thermometer
MEATER® Smart Meat Thermometer
MEATER® Smart Meat Thermometer
Bluetooth & WiFi Thermometer
Free

Revolutionize your cooking experience with a smart meat thermometer that connects to your phone via Bluetooth, allowing you to monitor and track the internal temperature of your meat for perfect results every time. Take the guesswork out of cooking meat with real-time temperature updates sent straight to your phone. Master the art of cooking with precision.

🍔 Food & Drink
(126K)
19
Digital Temperature Converter
Digital Temperature Converter
Digital Temperature Converter
°C to °F Calculator & Checker
Free

A handy temperature converter application with easy-to-use interface for converting between various temperature units, including Celsius, Fahrenheit, Kelvin, Rankine, Reaumur, and more. Ideal for both professionals and students needing quick temperature conversions.

🔧 Utilities
(1.1K)
20
Body Temperature App For Fever
Body Temperature App For Fever
Body Temperature App For Fever
Thermometer. Checker. Tracker
Free

Track, log, and monitor your body temperature, symptoms, and medications with ease using this app. Stay proactive about your health by keeping an eye on your well-being and sharing your data with healthcare professionals. Download now for free!

🏥 Medical
(22K)