Comparison

Hotspot Earth vs Wet Bulb Temperature Tracker

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

Head to head
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

About

Wet Bulb Temperature Tracker

This app tracks humid-heat conditions using Wet Bulb Globe Temperature (WBGT) to help you plan outdoor activities safely. It provides alerts, hourly timelines, and guidance based on risk levels.

Highlights
  • Wet Bulb Globe Temperature (WBGT) calculation
  • Humid-heat risk alerts
  • Hourly temperature timeline
  • Activity guidance by risk level
  • Manual calculation tool
  • Global city search
Features
Read full description

High Wet Bulb Globe Temperature (WBGT) days are more common each year. This free Wet Bulb Tracker sends you alerts and keeps you informed. Plan your activities for the day, at work or with family, with your health and safety in mind. Air Temperature is about hot air. Wet Bulb Temperature measures humid-heat conditions to indicate how much your body can cool without help, when active outdoors. Our body runs at about 36°C / 97°F, so a Wet Bulb of 30°C / 86°F feels uncomfortably warm, and by 35°C / 95°F the body dangerously overheats. THE OUTDOOR READING, FRONT AND CENTRE Wet Bulb is usually read off instruments in the field, but mathematical models let us work it out from weather data for a location. Wet Bulb Globe Temperature (WBGT) is calculated in the app from air temperature, humidity, sun, and wind. Calculations follow the US National Weather Service's forecast method: a psychrometric solve for Wet Bulb, and the Dimiceli and Piltz globe model. This reading is useful when working, training, or walking outside, as a heat risk warning. WET BULB MATH ANSWERS A DIFFERENT QUESTION FROM 'FEELS LIKE' Feels Like answers: how hot does the air feel? A Feels Like of 32°C / 90°F is just a warm day. Wet Bulb Globe answers: how much can sweating cool you outdoors? A Wet Bulb Globe of 32°C / 90°F is Critical, and tells you to immediately stop exertion outside and stay actively cool. It matters. HEAT ALERTS Alerts notify you when outdoor Wet Bulb rises at your location. Adjust alerts in Settings. SEE A WHOLE DAY'S TIMELINE View an hourly timeline of each day's Wet Bulb Globe temperature, colored by safety level, showing how humid-heat builds and fades. Drag the marker across the day and the readings above it change. Hours likely to see rain show a smaller bar giving the percentage chance in your area. KNOW WHAT TO DO Every risk level comes with basic but handy Guidance: how long it's reasonable to stay out, what to watch for, and when to take breaks. The About page links to the Wet Bulb thresholds used by militaries, occupational safety bodies, and national weather services worldwide. WORK IT OUT - GET AN UNDERSTANDING The Calc tab lets you slide in any air temperature, humidity, wind speed, and solar radiation and watch both readings respond. Useful for teaching the concept or calculating from data. FREE WET BULB TRACKER: The Wet Bulb Globe reading wherever you are, today's full hourly timeline with chance of rain, 'Rising Wet Bulb' alerts, Heat care guidance, the calculator with both readings, and city search worldwide. UNLOCK WETBULB+ An optional upgrade, as a yearly subscription or a single one-time purchase: • Six-day forecast timelines, for picking safe days and times when planning activity • An Apple Watch app with the current reading, safety level, and the day's timeline • Two Home Screen widgets. Glance at the current reading, safety level, and timeline. • Apple Weather as your data source, for more precise local data Wet Bulb Tracker is an informational tool. It is not a substitute for official weather warnings, workplace safety guidance, or medical advice. The WetBulb+ subscription renews yearly unless canceled at least 24 hours before the period ends. Payment is charged to your Apple Account, and you can manage or cancel in your Apple Account settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://tulkitdesign.com/wetbulb-tracker-privacy-policy/

Screenshots

Hotspot Earth4 screens
Wet Bulb Temperature Tracker4 screens

Verdict

The call

The clearest difference is in-app purchases: Wet Bulb Temperature Tracker at none against Hotspot Earth's 2. Wet Bulb Temperature Tracker also leads on iOS requirement (18.0 vs 26.2). On price, update cadence, 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

Both are free to download. Hotspot Earth sells 2 in-app purchases, starting at $1.99 per month. Wet Bulb Temperature Tracker asks for nothing beyond the download.

UpkeepUpdate frequency

Hotspot Earth ships an update weekly, Wet Bulb Temperature Tracker every 4 days. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

Scorecard2 real differences · 8 level
Hotspot Earth versus Wet Bulb Temperature Tracker: the parameters behind the verdict, then further details
ParameterHotspot EarthWet Bulb Temperature Tracker
PriceFreeFree
Rating—5.0 (2 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—2 — better
Update frequencyWeeklyEvery 4 days — better
AdsNoNo
In-app purchasesYesNo — better
Monetization—Free with in-app purchases
DevicesiPhone, iPadiPhone, Apple Watch
Requires iOS26.218.0 — better
Further details — not scored
Size38 MB17 MB
Age rating4+4+
DeveloperJames GroteSameer Rajadnya

In-app purchases

2 purchases

Hotspot Earth

Subscriptions1
  • Pro Monthly$1.991 Month
One-time1
  • Lifetime Access$19.99
None

Wet Bulb Temperature Tracker

No in-app purchases

Questions

Is Hotspot Earth free?
Hotspot Earth is free to download, with in-app purchases available.
Is Wet Bulb Temperature Tracker free?
Wet Bulb Temperature Tracker is free to download, with no in-app purchases.
Do Hotspot Earth or Wet Bulb Temperature Tracker have ads?
Neither Hotspot Earth nor Wet Bulb Temperature Tracker shows ads.
Which is updated more often, Hotspot Earth or Wet Bulb Temperature Tracker?
Hotspot Earth ships an update weekly, and Wet Bulb Temperature Tracker every 4 days. Most recently, Hotspot Earth was updated on October 25, 2026 and Wet Bulb Temperature Tracker on October 24, 2026.

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