Heat Index Pro Downloads & RevenueHeat Index Pro · App Store
Heat Index Pro is #118 in Weather Paid in Japan and charting in 11 of 30 countries we track.
Updated 11 Nov 2026 · rankings refresh through the day
DeveloperLionsApp di Nallbati Elton
CategoryWeather
Price2.99 USD
Released
Rating★ 3.9 (9)
Version1.3
Age rating4+
First seen by us
24 Sep 2026
24 Sep 2026Installs (est.)1k+ worldwide
💰Price rise💰Price rise📈Entered the top 10📈Entered the top 100✏️New screenshots✏️New icon📦First update in 2243 days📦Updated to version 1.3🆕First spotted by AppInsider🆕Released on the App Store
Full timeline · 112 events in the last 12 months
- 💰Heat Index Pro: price rise1.99 EUR → 2.99 EUR · DE
- 💰Heat Index Pro: price rise2.99 CAD → 3.99 CAD · CA
- 💰Heat Index Pro: price rise12.90 BRL → 19.90 BRL · BR
- 💰Heat Index Pro: price rise300.00 JPY → 500.00 JPY · JP
- 💰Heat Index Pro: price rise7.99 AED → 12.99 AED · AE
- 💰Heat Index Pro: price rise9.99 SAR → 12.99 SAR · SA
- 💰Heat Index Pro: price rise199.00 RUB → 249.00 RUB · RU
- 💰Heat Index Pro: price rise1.99 EUR → 2.99 EUR · IT, FR
- 💰Heat Index Pro: price rise199.00 INR → 299.00 INR · IN
- 💰Heat Index Pro: price drop2.99 EUR → 1.99 EUR · DE
- 💰Heat Index Pro: price drop4.99 AUD → 2.99 AUD · AU
- 💰Heat Index Pro: price drop500.00 JPY → 300.00 JPY · JP
- 💰Heat Index Pro: price drop3.99 CAD → 2.99 CAD · CA
- 💰Heat Index Pro: price drop12.99 SAR → 9.99 SAR · SA
- 💰Heat Index Pro: price drop2.99 EUR → 1.99 EUR · IT, FR
- 💰Heat Index Pro: price drop299.00 INR → 199.00 INR · IN
- 💰Heat Index Pro: price drop19.90 BRL → 12.90 BRL · BR
- 💰Heat Index Pro: price drop12.99 AED → 7.99 AED · AE
- 💰Heat Index Pro: price drop249.00 RUB → 199.00 RUB · RU
- 💰Heat Index Pro: price rise1.99 EUR → 2.99 EUR · DE
- 💰Heat Index Pro: price rise9.99 SAR → 12.99 SAR · SA
- 💰Heat Index Pro: price rise199.00 RUB → 249.00 RUB · RU
- 💰Heat Index Pro: price drop600.00 JPY → 500.00 JPY · JP
- 💰Heat Index Pro: price rise1.99 EUR → 2.99 EUR · IT, FR
- 💰Heat Index Pro: price rise199.00 INR → 299.00 INR · IN
- 💰Heat Index Pro: price rise2.99 CAD → 3.99 CAD · CA
- 💰Heat Index Pro: price rise12.90 BRL → 19.90 BRL · BR
- 💰Heat Index Pro: price rise2.99 AUD → 4.99 AUD · AU
- 💰Heat Index Pro: price rise7.99 AED → 12.99 AED · AE
- 💰Heat Index Pro: price rise300.00 JPY → 600.00 JPY · JP
- 💰Heat Index Pro: price drop12.99 SAR → 9.99 SAR · SA
- 💰Heat Index Pro: price drop249.00 RUB → 199.00 RUB · RU
- 💰Heat Index Pro: price drop2.99 EUR → 1.99 EUR · IT
- 💰Heat Index Pro: price drop3.99 CAD → 2.99 CAD · CA
- 💰Heat Index Pro: price drop19.90 BRL → 12.90 BRL · BR
- 💰Heat Index Pro: price drop4.99 AUD → 2.99 AUD · AU
- 💰Heat Index Pro: price drop12.99 AED → 7.99 AED · AE
- 💰Heat Index Pro: price drop500.00 JPY → 300.00 JPY · JP
- 💰Heat Index Pro: price drop2.99 EUR → 1.99 EUR · DE, FR
- 💰Heat Index Pro: price drop299.00 INR → 199.00 INR · IN
- 📈Heat Index Pro entered the top 10Top Paid · Weather · FR
- 📈Heat Index Pro entered the top 100Top Grossing · Weather · FR
- 💰Heat Index Pro: price drop3.99 EUR → 2.99 EUR · DE
- 💰Heat Index Pro: price drop5.99 EUR → 2.99 EUR · FR
- 💰Heat Index Pro: price drop5.99 AUD → 4.99 AUD · AU
- 📈Heat Index Pro entered the top 10Top Paid · Weather · IT
- 📈Heat Index Pro charting in a new country in 2 chartsIndia · Russia
- 💰Heat Index Pro: price drop19.99 SAR → 12.99 SAR · SA
- 💰Heat Index Pro: price drop5.99 EUR → 2.99 EUR · IT
- 💰Heat Index Pro: price drop29.90 BRL → 19.90 BRL · BR
- 💰Heat Index Pro: price drop600.00 JPY → 500.00 JPY · JP
- 💰Heat Index Pro: price rise17.99 SAR → 19.99 SAR · SA
- 💰Heat Index Pro: price rise3.99 EUR → 5.99 EUR · IT, FR
- 💰Heat Index Pro: price rise24.90 BRL → 29.90 BRL · BR
- 💰Heat Index Pro: price rise2.99 EUR → 3.99 EUR · FR
- 💰Heat Index Pro: price rise9.99 SAR → 17.99 SAR · SA
- 💰Heat Index Pro: price rise300.00 JPY → 600.00 JPY · JP
- 💰Heat Index Pro: price rise1.99 EUR → 3.99 EUR · IT, DE
- 💰Heat Index Pro: price rise12.90 BRL → 24.90 BRL · BR
- 💰Heat Index Pro: price rise2.99 AUD → 5.99 AUD · AU
- 💰Heat Index Pro: price drop500.00 JPY → 300.00 JPY · JP
- 💰Heat Index Pro: price drop4.99 AUD → 2.99 AUD · AU
- 💰Heat Index Pro: price drop12.99 SAR → 9.99 SAR · SA
- 💰Heat Index Pro: price drop2.99 EUR → 1.99 EUR · IT, DE
- 💰Heat Index Pro: price drop19.90 BRL → 12.90 BRL · BR
- 💰Heat Index Pro: price drop17.99 SAR → 12.99 SAR · SA
- 💰Heat Index Pro: price drop600.00 JPY → 500.00 JPY · JP
- 💰Heat Index Pro: price drop3.99 EUR → 2.99 EUR · IT, DE
- 💰Heat Index Pro: price drop24.90 BRL → 19.90 BRL · BR
- 💰Heat Index Pro: price drop5.99 AUD → 4.99 AUD · AU
- 💰Heat Index Pro: price rise4.99 AUD → 5.99 AUD · AU
- 💰Heat Index Pro: price rise2.99 EUR → 3.99 EUR · DE, IT
- 💰Heat Index Pro: price rise12.99 SAR → 17.99 SAR · SA
- 💰Heat Index Pro: price rise500.00 JPY → 600.00 JPY · JP
- 💰Heat Index Pro: price rise19.90 BRL → 24.90 BRL · BR
- 💰Heat Index Pro: price rise1.99 EUR → 2.99 EUR · FR
- 📈Heat Index Pro entered the top 100Top Paid · Weather · US
- 💰Heat Index Pro: price drop22.99 AED → 12.99 AED · AE
- 💰Heat Index Pro: price rise1.99 GBP → 2.99 GBP · GB
- 💰Heat Index Pro: price rise300.00 JPY → 500.00 JPY · JP
- 💰Heat Index Pro: price rise2.99 CAD → 3.99 CAD · CA
- 💰Heat Index Pro: price rise9.99 SAR → 12.99 SAR · SA
- 💰Heat Index Pro: price rise1.99 EUR → 2.99 EUR · IT
- 💰Heat Index Pro: price rise12.90 BRL → 19.90 BRL · BR
- 💰Heat Index Pro: price rise2.99 AUD → 4.99 AUD · AU
- 💰Heat Index Pro: price rise1.99 EUR → 2.99 EUR · DE
- 💰Heat Index Pro: price drop2.99 EUR → 1.99 EUR · FR
- 💰Heat Index Pro: price drop24.99 SAR → 9.99 SAR · SA
- 💰Heat Index Pro: price drop6.99 EUR → 1.99 EUR · IT
- 💰Heat Index Pro: price drop5.99 GBP → 1.99 GBP · GB
- 💰Heat Index Pro: price drop39.90 BRL → 12.90 BRL · BR
- 💰Heat Index Pro: price drop500.00 JPY → 300.00 JPY · JP
- 💰Heat Index Pro: price drop3.99 CAD → 2.99 CAD · CA
- 💰Heat Index Pro: price drop2.99 EUR → 1.99 EUR · DE
- 💰Heat Index Pro: price rise12.99 SAR → 24.99 SAR · SA
- 💰Heat Index Pro: price rise2.99 EUR → 6.99 EUR · IT
- 💰Heat Index Pro: price rise2.99 GBP → 5.99 GBP · GB
- 💰Heat Index Pro: price rise19.90 BRL → 39.90 BRL · BR
- 💰Heat Index Pro: price rise12.99 AED → 22.99 AED · AE
- 💰Heat Index Pro: price rise9.99 SAR → 12.99 SAR · SA
- 💰Heat Index Pro: price rise1.99 EUR → 2.99 EUR · IT, FR
- 💰Heat Index Pro: price rise12.90 BRL → 19.90 BRL · BR
- 💰Heat Index Pro: price rise1.99 EUR → 2.99 EUR · DE
- ✏️Heat Index Pro: new screenshots10 screenshots (was 10) · IT
- ✏️Heat Index Pro: new icon
→ 
· IT, BR - ✏️Heat Index Pro: renamedIndice di calore → Indice di Calore Pro · IT
- ✏️Heat Index Pro: new screenshots10 screenshots (was 10) · BR
- ✏️Heat Index Pro: renamedÍndice de calor → Índice de Calor Pro · BR
- 📦Heat Index Pro: first update in 2243 days
- 📦Heat Index Pro updated to version 1.3+ Completely redesigned app (The app has been completely redesigned in both design and features)
+ Optimized for iOS 26 (The app is now optimized for iOS 26)
+ Liquid Glass (Say hello to Liquid Glass)
+ Landscape orientation support (You can now use the app with your devices in landscape orientation)
+ Rothfusz calculation with adjustment (For low temperature values, the simplified adjustment formula by Rothfusz is now used)
+ Heat index, temperature, humidity chart (We’ve added a 3‑day forecast chart for heat index, temperature, and humidity)
+ Upgrade to Pro (Get additional features by upgrading to the Pro version)
+ New weather data provider (Welcome, WeatherApi)… more - 🆕Heat Index Pro first spotted by AppInsider#94 in Top Paid · Weather · Italy
- 🆕Heat Index Pro released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
3.9 ★
9 ratings
Measured
Best rank now
#118
Weather PaidMeasured
Heat Index Pro on the App Store
App details
App ID
1480149233
Publisher
LionsApp di Nallbati Elton
On the store since
Jun 2020
6 years on the store
Minimum OS
iOS 26.0+
iPhone 11 and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
14
DA NL EN FI FR DE IT JA NB PT RU ZH …
Size
14 MB
Also listed in
Utilities
App privacy Measured
Heat Index Pro declares it collects no data at all — the rarest and most private label on the App Store.
Declared label
Data Not Collected
As declared by the developer on the App Store — Apple requires every app to publish this label. We track changes over time.
Heat Index Pro downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Apple publishes no download counts. App Store downloads come from chart positions and daily rating growth per country, calibrated on Google Play install counts; lifetime installs from ratings worldwide × installs per rating. Confidence is the chance the real number is within half to double ours.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Japan | WeatherPaid | #118 |
 Brazil | WeatherPaid | #83 |
 France | WeatherPaid | #109 |
 Germany | WeatherPaid | #157 |
| Italy | WeatherPaid | #89 |
 Russia | WeatherPaid | #113 |
 Saudi Arabia | WeatherPaid | #86 |
 Canada | WeatherPaid | #157 |
 India | WeatherPaid | #168 |
 Australia | WeatherPaid | #198 |
 United Arab Emirates | WeatherPaid | #120 |
Apps near Heat Index Pro on the chart
Weather Paid, around #118.
Ratings
App Store, worldwide.
Rating
3.9 ★
9 ratings
Measured
Ratings
9
Measured
Review momentum
ⓘ How we measure thisNew ratings a week
under 1
4-week average
Lifetime rating
3.9★
recent stars not readable yet: new ratings are a tiny share of the total
Review momentum
20/100
faster than 0% of Weather apps
Review momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
What users say about Heat Index Pro
From recent reviews.
About Heat Index Pro
The first "Heat Index" tool that uses the Lans P. Rothfusz equation.
[Description]
The heat index (HI) is an index that combines air temperature and relative humidity, in shaded areas, that is the feeling of "hot" or "cold" that is felt; it is due not only to the air temperature, but also to other environmental conditions, such as humidity and wind.
The heat index was developed in 1979 by Robert G. Steadman.
The computation of the heat index is a refinement of a result obtained by multiple regression analysis carried out by Lans P. Rothfusz and described in a 1990 National Weather Service (NWS) Technical Attachment (SR 90-23).
The heat index is also known as the "felt air temperature", "apparent temperature", "real feel" or "feels like".
The humidity in the air can increase the sensation of heat, while the wind can increase the sensation of cold.
For example, when the temperature is 32°C (90°F) with 70% relative humidity, the heat index is 41°C (106°F).
[How does it work]
Wherever you are, you will have the Heat Index, temperature, humidity and weather conditions.
Search for new locations and they will automatically be added to your favorites.
Make sure you have activated the location services on your device, at this point the App will detect your geographical position.
[Features]
- Heat Index calculated with the Rothfusz equation
- Temperature
- Humidity
- Effects of the Heat Index
- Choice of 3 units of measurement: celsius, fahrenheit and kelvin
- Map current location
- Search City (without limits)
- Save favorite places (without limits)
- Intuitive graphics
- Ease of use
[Supported languages]
English, Italian, Spanish, French, German, Portuguese, Dutch, Russian, Chinese, Japanese, Danish, Finnish, Norwegian, Swedish.
[Support]
If you need help please do not hesitate to contact us at [email protected], or visit www.lionsapp.com
If you like the App, don't forget to leave us a comment on the App Store.
[Description]
The heat index (HI) is an index that combines air temperature and relative humidity, in shaded areas, that is the feeling of "hot" or "cold" that is felt; it is due not only to the air temperature, but also to other environmental conditions, such as humidity and wind.
The heat index was developed in 1979 by Robert G. Steadman.
The computation of the heat index is a refinement of a result obtained by multiple regression analysis carried out by Lans P. Rothfusz and described in a 1990 National Weather Service (NWS) Technical Attachment (SR 90-23).
The heat index is also known as the "felt air temperature", "apparent temperature", "real feel" or "feels like".
The humidity in the air can increase the sensation of heat, while the wind can increase the sensation of cold.
For example, when the temperature is 32°C (90°F) with 70% relative humidity, the heat index is 41°C (106°F).
[How does it work]
Wherever you are, you will have the Heat Index, temperature, humidity and weather conditions.
Search for new locations and they will automatically be added to your favorites.
Make sure you have activated the location services on your device, at this point the App will detect your geographical position.
[Features]
- Heat Index calculated with the Rothfusz equation
- Temperature
- Humidity
- Effects of the Heat Index
- Choice of 3 units of measurement: celsius, fahrenheit and kelvin
- Map current location
- Search City (without limits)
- Save favorite places (without limits)
- Intuitive graphics
- Ease of use
[Supported languages]
English, Italian, Spanish, French, German, Portuguese, Dutch, Russian, Chinese, Japanese, Danish, Finnish, Norwegian, Swedish.
[Support]
If you need help please do not hesitate to contact us at [email protected], or visit www.lionsapp.com
If you like the App, don't forget to leave us a comment on the App Store.
Latest updates
1.3
+ Completely redesigned app (The app has been completely redesigned in both design and features)
+ Optimized for iOS 26 (The app is now optimized for iOS 26)
+ Liquid Glass (Say hello to Liquid Glass)
+ Landscape orientation support (You can now use the app with your devices in landscape orientation)
+ Rothfusz calculation with adjustment (For low temperature values, the simplified adjustment formula by Rothfusz is now used)
+ Heat index, temperature, humidity chart (We’ve added a 3‑day forecast chart for heat index, temperature, and humidity)
+ Upgrade to Pro (Get additional features by upgrading to the Pro version)
+ New weather data provider (Welcome, WeatherApi)
1.2
Store changes
What Heat Index Pro changed on its store page: name, icon, screenshots, price, size, languages, requirements.
Price rise
1.99 EUR → 2.99 EUR
Price rise
2.99 CAD → 3.99 CAD
Price rise
12.90 BRL → 19.90 BRL
