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Thermo Diem: Feels Like Temp

Thermo Diem: Feels Like Temp

Is it warmer than yesterday?

4 ratings
21 reviews
🔧 Utilities
☀️ Weather
Free
In-App Purchases

Details

Released
October 14, 2014
Updated
October 31, 2026

Features

Developer

Basic Function
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Thermo Diem: Feels Like Temp video #1 for iPhone
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Thermo Diem: Feels Like Temp screenshot #11 for iPhone
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About

This app provides weather context by comparing apparent temperature across time, showing how today feels relative to yesterday or the future. It translates complex data into easy-to-understand shifts and offers advanced features like trend curves and nationwide movers.

✓Apparent temperature comparison
✓Relative weather shifts
✓Trend curves and future forecasts
✓CarPlay and Dynamic Island integration
✓Home and Lock Screen widgets
✓Nationwide movers feature
✓Multi-language support
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What's New in Thermo Diem

3.8.1

October 31, 2026

• CarPlay & Widget Temperature Fix: Fixed an issue where CarPlay Live Activities and widgets could display in Fahrenheit on devices configured for Celsius / metric units. • Seamless Unit Defaults: Temperature units now reliably honor your system locale across iPhone, Apple Watch, Mac, and background widgets right from first launch. • Live Activity & Commute Polish: Smoother updates and consistent delta formatting across the Lock Screen, Dynamic Island, and CarPlay. • Reliability & Performance: Fine-tuned background refresh timing, Smart Alert delivery, and complication freshness across watchOS and macOS.

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Subscriptions & In-App Purchases

$0.99

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User reviews

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Nice widget view

I like that I can see the “feels like” at a glance when I have the widget on my widgets screen. Now it’s updating much faster than before! Good job!
JJambalayafjjdch

Response from developer

Thanks for reporting this. I tracked down the stale widget behavior and made some changes since this review was posted. The widget now updates its displayed weather every hour and fetches fresh weather data in the background more often, without needing the app to be opened first. iOS still controls the exact timing of background updates, but this should be much more reliable now. Look for version 3.6.1 coming any day now. Thanks - Mickey (Lead Dev)

Good concept, but often wrong

I like the idea of this app a lot but to give an example of how completely wrong this app can be, right now the feels like temp is 70°F and when I compare with tomorrow it says it will feel much cooler tomorrow. The feels like temp at this time tomorrow it says? 70°F. Hmm. If the dev can fix this app it would be great, but it’s been around a long time and yet it’s so entirely wrong still? That doesn’t give me a lot of hope.
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CCrunchewy

Response from developer

Thanks for pointing this out, you were right. We found an issue where the tomorrow comparison could show today’s temperature alongside tomorrow’s warmer/cooler verdict, making the result appear contradictory. We’ve fixed it and added testing to prevent it from happening again. We appreciate the clear example and hope you’ll give the update another try. The fix will be up in version 3.7 coming out very soon. Please send any and all bug reports to thermodiem@gmail.com or leave a message on X and we'll address them ASAP! Thanks - Mickey (Lead Dev)

Widget not current

After I click on widget, only then it updates to the current weather. This defeats the purpose of being able to glance at the widget and have current information.
JJambalayafjjdch

Response from developer

Thanks for reporting this. I tracked down the stale widget behavior and made some changes since this review was posted. The widget now updates its displayed weather every hour and fetches fresh weather data in the background more often, without needing the app to be opened first. iOS still controls the exact timing of background updates, but this should be much more reliable now. Look for version 3.6.1 coming any day now. Thanks - Mickey (Lead Dev)

Julia

I love this app I really recommend it for people who are on the go because it is easy to see it right away and compare today and the next days temps guys get it!!!!!😭🙏
JJjhhhyyuisnis

3.2 is a Game Changer

Works on all of your devices
MMickeyDeLo
See 16 more reviews

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FAQ

What makes Thermo Diem different from other weather apps?

Thermo Diem focuses on the 'feels like' temperature and provides context by comparing current conditions to past and future days. It translates complex biometeorological data into seven clear shifts, making weather changes easily understandable at a glance.

How does Thermo Diem calculate 'feels like' temperature?

Thermo Diem uses established biometeorological models, including NOAA Wind Chill, the Rothfusz Heat Index, and Steadman-based calculations. It accounts for humidity, wind, solar exposure, and the combined thermal effect on the human body.

Can I see future weather with Thermo Diem?

Yes, Thermo Diem allows you to look ahead to tomorrow and explore how upcoming days may feel relative to right now or yesterday's high. You can compare future conditions with current or past data.

Does Thermo Diem have ads?

No, Thermo Diem is ad-free. The app prioritizes privacy and does not use advertising networks, behavioral tracking, or data harvesting.

What devices is Thermo Diem available on?

Thermo Diem is available on Mac, Apple Watch, iPhone, and iPad. It also offers features for CarPlay and Dynamic Island.

How often is Thermo Diem updated?

The latest version is 3.8.1, and the app was last updated on October 31, 2026. While this indicates a recent update, specific update frequency is not detailed, but the version history suggests ongoing development.

What languages does Thermo Diem support?

Thermo Diem supports English, Spanish, French, and German throughout the app, widgets, and Apple Watch experience.

What is the age rating for Thermo Diem?

Thermo Diem has an age rating of 4+. This indicates it is suitable for children and adults, with no mature content.