Comparison

Weather Calc vs Hotspot Earth

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

Head to head
About

Weather Calc

This app provides pilots and weather enthusiasts with a comprehensive tool for performing various weather-related calculations. It offers conversions and computations for atmospheric pressure, temperature, humidity, wind speed, and more.

Highlights
  • Altimeter setting calculation
  • Heat index computation
  • Pressure unit conversion
  • Relative humidity calculation
  • Speed of sound display
  • Wind chill computation
  • Wind speed conversion
Features
Currently charting
Read full description

If you’re a pilot, you often need to make lots of weather related calculations. Now there’s an easy solution, as close as your iPhone. Weather Calc performs the following weather relation calculations: Altimeter Setting - compute the altimeter setting based on elevation and station pressure Cricket Temperature - just for fun! This lets you estimate the temperature based on the chirp rate of a cricket Heat Index - compute the heat index based on the temperature and relative humidity Pressure - convert between hPa, atmospheres, psi, and inches and mm of mercury (Hg) Relative Humidity - compute the wet bulb and dewpoint based on the temperature, pressure, and relative humidity Speed Of Sound - displays the speed of sound in various units, given the temperature Standard Atmosphere - compute the temperature, pressure, density, viscosity, speed of sound, and more Station Pressure - compute the station pressure based on the elevation and altimeter setting. Temperature - convert between degrees Fahrenheit, Celsius, Kelvin, and Rankine Virtual Temperature - compute the virtual temperature based on the temperature, dewpoint, and pressure Vapor Pressure - com[ute the saturated and actual vapor pressure, as well as relative humidity Wet Bulb - compute the dewpoint and relative humidity based on the temperature, pressure, and wet bulb reading Wind Chill - compute the wind chill based on the temperature and wind speed Wind Speed - convert between knots, kilometers/hour, meters/second, miles/hour, feet/second Buy your copy now, and let Weather Calc take the drugery out of weather related calculations.

About

Hotspot Earth

Features
Read full description

Hotspot Earth - The Hottest Point on Earth, Right Now Where on Earth is it hottest right now? Hotspot Earth shows you in seconds. This single-purpose app monitors the world's most extreme heat locations - from the Lut Desert and Death Valley to the Sahara, Persian Gulf, and South Asian heat belts - and pinpoints whichever is hottest at this moment on a beautiful 3D satellite map. WHAT YOU CAN DO ° See the hottest place on Earth in seconds ° Discover the world's top 10 hottest places ° Watch the stunning heat map cover the earth ° Make it part of your day with widgets ° Share what you find WHY HOTSPOT EARTH? Heatwaves are becoming more frequent, more intense, and longer-lasting. Records that once stood for decades are now broken multiple times per decade. Hotspot Earth turns abstract climate data into a daily, glanceable experience - a window into where Earth's heat is concentrating today. Whether you're a weather enthusiast, climate-curious, traveler, or just love seeing extreme records, Hotspot Earth makes the planet's heat tangible. ONE THING, DONE WELL No accounts. No ads. No clutter. Just the hottest point on Earth, beautifully presented. SUBSCRIPTION PLANS: Hotspot Earth offers 1 subscription plan and 1 in-app-purchase which unlock Pro Mode to access all content. 1. Monthly Plan 2. Lifetime Purchase More Subscription Information: - Payment will be charged to your Apple ID account at confirmation of purchase. - Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. - Within 24-hours prior to the end of the current period, the account will be charged for the renewal of the subscription, indicating the cost of the renewal. - You can manage subscriptions and turn off auto-renewal after purchase by going to your App Store account settings. - Any unused portion of a free trial period, if offered, will be forfeited when purchasing a subscription. https://www.brainfevermedia.com/privacyPolicy.html https://www.brainfevermedia.com/terms.html

Screenshots

Weather Calc4 screens
Hotspot Earth4 screens

Verdict

The call

The clearest difference is price: Hotspot Earth at Free against Weather Calc's $0.99. Hotspot Earth also leads on update cadence (weekly vs every 32 months). Weather Calc's advantage is in-app purchases (none vs 2) and chart position (#165 vs unranked). On ads and device support 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

Hotspot Earth is free to download; Weather Calc costs $0.99 up front. Hotspot Earth sells 2 in-app purchases, starting at $1.99 per month. Weather Calc asks for nothing beyond the download.

UpkeepUpdate frequency

Weather Calc ships an update every 32 months, Hotspot Earth weekly. The most recent releases landed on November 10, 2026 and November 5, 2026 respectively.

Scorecard5 real differences · 6 level
Weather Calc versus Hotspot Earth: the parameters behind the verdict, then further details
ParameterWeather CalcHotspot Earth
Price$0.99Free — better
Rating4.3 (3 ratings) — better—
Positive reviews85.7% of reviews—
Number of ratings3 — better—
Update frequencyEvery 32 monthsWeekly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid—
Best chart rank#165 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.6 — better26.2
Further details — not scored
Size4 MB38 MB
Age rating4+4+
DeveloperBlack Cat SystemsJames Grote

In-app purchases

None

Weather Calc

No in-app purchases

2 purchases

Hotspot Earth

Subscriptions1
  • Pro Monthly$1.991 Month
One-time1
  • Lifetime Access$19.99

Questions

Is Weather Calc free?
Weather Calc costs $0.99, with no in-app purchases.
Is Hotspot Earth free?
Hotspot Earth is free to download, with in-app purchases available.
Do Weather Calc or Hotspot Earth have ads?
Neither Weather Calc nor Hotspot Earth shows ads.
Which is updated more often, Weather Calc or Hotspot Earth?
Weather Calc ships an update every 32 months, and Hotspot Earth weekly. Most recently, Weather Calc was updated on November 10, 2026 and Hotspot Earth on November 5, 2026.

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