Franz Fahrenheit app icon
Franz Fahrenheit
★ Highest rated dual-temperature weather app

Weather in Celsius + Fahrenheit at the same time.

Made for expats in the US and Americans abroad who want to familiarize themselves with the Celsius or Fahrenheit scale. Beautiful design, accurate forecasts, and widgets for your home and lock screen.

Download on the App Store Get weather for your location
Franz Fahrenheit showing New York weather in Celsius and Fahrenheit Franz Fahrenheit showing Miami weather with dynamic background color Hourly and 15-day forecast with Celsius and Fahrenheit Home screen widgets showing dual-temperature weather
Features

Everything you need, both scales at once.

No tapping, no toggling, no mental math. Franz Fahrenheit shows Celsius and Fahrenheit side-by-side across current conditions, hourly, and 15-day forecasts.

Dual temperature display

Every temperature — current, hourly, daily — is shown in both Celsius and Fahrenheit at the same time.

Home & lock screen widgets

Glanceable widgets in multiple sizes for your iPhone home screen and lock screen.

Hourly forecast

See how the day unfolds hour-by-hour with precipitation chance and temperature in both scales.

15-day forecast

Plan ahead with a detailed two-week outlook for any location in the world.

Coming soon

Apple Watch app

Dual-temperature weather right on your wrist, including complications for your watch face.

Dynamic design

Backgrounds subtly shift with conditions and time of day — beautiful without getting in the way.

Accurate data

Powered by Apple Weather and The Weather Company.

Two of the most trusted global weather providers deliver current conditions, forecasts, and precipitation data for any location — so you can trust what you see.

FAQ

Answers to common questions.

What weather app shows both Celsius and Fahrenheit at the same time?
Franz Fahrenheit is the highest rated iOS weather app that displays temperatures in both Celsius and Fahrenheit simultaneously, without tapping or toggling. It shows current conditions, an hourly forecast, and a 15-day forecast — every value visible in both scales.
Is Franz Fahrenheit free?
Yes. Franz Fahrenheit is free to download on the App Store. Optional in-app purchases unlock premium features like home screen and lock screen widgets.
Who is Franz Fahrenheit made for?
It's made for expats in the US and Americans abroad who want to familiarize themselves with the Celsius or Fahrenheit scale. It's also useful for travelers, international workers, and anyone who reads weather reports across regions.
Where does the weather data come from?
Weather data is provided by Apple Weather (WeatherKit) and The Weather Company, two of the most accurate global weather providers.
Does Franz Fahrenheit have widgets?
Yes. Widgets are available for your iOS home screen and lock screen in multiple sizes, so you can see dual-temperature weather at a glance.
How do I convert Celsius to Fahrenheit?
The formula is °F = (°C × 9/5) + 32. For example, 20°C equals 68°F. Franz Fahrenheit handles this automatically and shows both values at once, so you never have to do the math.
Is there an Android version?
Not yet. Franz Fahrenheit is currently available on iOS and as a free web app. An Android version is under consideration.