Weather Calc vs HurriMap
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Altimeter setting calculation
- Heat index computation
- Pressure unit conversion
- Relative humidity calculation
- Speed of sound display
- Wind chill computation
- Wind speed conversion
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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.
HurriMap
This app provides personalized hurricane decision support by showing storm tracks, wind arrival times, and preparation deadlines for your specific location. It offers detailed storm information, custom alerts, and local resources like shelters and evacuation zones.
- Personalized preparation timelines
- Wind arrival time contours
- Storm track and cone of uncertainty
- Custom watch and warning alerts
- Satellite imagery
- Local shelter and evacuation information
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HurriMap: Hurricane and Typhoon Tracker When a storm is coming, every hour matters. HurriMap shows where it could go, when damaging winds could reach you, and when to be finished preparing. It's personal hurricane decision support: the official forecast, turned into a timeline for your own place. KNOW WHEN TO PREPARE • Enter the hours you need to get ready and see your "finish preparations by" time, built from the earliest reasonable arrival of tropical-storm-force winds. • See the earliest reasonable and most likely arrival of 39, 58 and 74 mph winds, drawn as labeled contours on the map. • Check your chances of damaging winds, whether you're in the cone, and how close the center will pass. Dangerous conditions can extend well beyond the cone. FOLLOW EVERY STORM • Hurricanes, tropical storms and developing systems in the Atlantic, Gulf of Mexico, Caribbean, and eastern and central Pacific, including Hawaii. • NEW: Typhoons and South Pacific cyclones for Guam, the Northern Mariana Islands and American Samoa, with track, wind field, danger area, models, wind chances and arrival times. • Forecast tracks, the cone of uncertainty, storm history, wind fields, and coastal and inland watches and warnings. • Two-day and seven-day formation chances for developing systems. • National Hurricane Center advisories, discussions, key messages and hazards, and Joint Typhoon Warning Center warnings, reflowed for your phone. • Infrared, visible and water vapor satellite imagery. ALERTS YOUR PHONE DOESN'T GET Your phone already receives hurricane, storm surge and tornado warnings through Wireless Emergency Alerts. HurriMap sends the alerts those don't: • Tropical storm warnings for your place, free. • With HurriMap Pro, hurricane, tropical storm, storm surge and typhoon watches: your head start, about 48 hours before the winds. • Private by design: your phone follows its National Weather Service forecast zone, and your location is never sent to our servers. • Every active watch, warning and local hurricane statement for your place, right in the app. FIND LOCAL INFORMATION • Check mapped storm surge risk where coverage is available. • View Florida evacuation zones and reported county evacuation, curfew and re-entry information. • Find nearby open U.S. shelters, with pet policies, accessibility and directions. Confirm availability before traveling. • Check buoy and coastal station reports for wind, pressure and waves. SHARE AND READ YOUR WAY • Share map images sized for posts, stories and video. • In English and Spanish, with NHC's Spanish advisories. EXPLORE MORE WITH HURRIMAP PRO An optional paid subscription adds: • Watch alerts for hurricane, tropical storm, storm surge and typhoon watches at your place. • Spaghetti model tracks, including European and AI models, and ensemble comparisons. • Intensity charts for every model. • Hurricane Hunter flight tracks and reconnaissance observations when available. • Scenario editing: change a storm's path or strength to explore "what if" possibilities. Scenarios are estimates, not forecasts. • An Apple Watch app and watch-face complications. • Drawing tools to mark up and share maps. Forecasts, watches and warnings in the app, tropical storm warning alerts, storm surge information, wind arrival times, NHC advisories and My place are free. Pro subscriptions renew automatically until canceled in your App Store account settings. Download HurriMap and be ready before the wind arrives. HurriMap is independent and is not affiliated with or endorsed by NOAA, NHC, NWS, JTWC, the U.S. Navy, the U.S. Air Force or FEMA. Typhoon wind chances and arrival times are HurriMap's estimates from JTWC forecasts. Alerts need internet access and notification permission; delivery isn't guaranteed. Keep Wireless Emergency Alerts enabled, use a weather radio, and follow local officials and evacuation orders. Privacy Policy: https://www.hurrimap.com/privacy.html Terms of Use: https://www.hurrimap.com/terms.html
Screenshots
Verdict
The clearest difference is price: HurriMap at Free against Weather Calc's $0.99. HurriMap also leads on rating (5.0 vs 4.3) and update cadence (every 5 days vs every 32 months). Weather Calc's advantage is in-app purchases (none vs 1) and chart position (#166 vs unranked). On ratings volume, ads, device support and iOS requirement 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
HurriMap is free to download; Weather Calc costs $0.99 up front. HurriMap sells 1 in-app purchase, starting at $5.99 per year. Weather Calc asks for nothing beyond the download.
HurriMap holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 3 and 2 respectively.
Weather Calc ships an update every 32 months, HurriMap every 5 days. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.
| Parameter | Weather Calc | HurriMap |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 4.3 (3 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 85.7% of reviews | — |
| Number of ratings | 3 — better | 2 |
| Update frequency | Every 32 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Best chart rank | #166 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Apple Watch — better |
| Requires iOS | 15.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 4 MB | 44 MB |
| Age rating | 4+ | 4+ |
| Developer | Black Cat Systems | Ultimate Enterprises |
Customer experience
Weather Calc
HurriMap
In-app purchases
Weather Calc
No in-app purchases
HurriMap
- HurriMap Pro Annual3 Days trial$5.991 Year









