Comparison

EF Scale vs Storm Tracker°

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

Head to head
About

EF Scale

Assess tornado and wind damage with this tool that simplifies the Enhanced Fujita (EF) Scale. Follow on-screen prompts to select damage indicators and degrees of damage, then adjust for construction variability to estimate wind speeds.

Highlights
  • Simplified EF Scale assessment
  • Damage indicator selection
  • Degree of damage input
  • Construction variability adjustment
  • Visual damage examples
  • About and share functions
Features
Read full description

Rate tornado damage the way surveyors do. EF Scale puts the complete Enhanced Fujita scale on your iPhone, iPad, and Mac — all 28 damage indicators, every degree of damage, and the expected wind speeds behind each rating. Browse structure types from small barns and family residences to high-rise buildings, transmission lines, and trees. Compare what you see against reference photos and construction details, then pick a degree of damage and tune the wind speed estimate between its bounds to account for construction quality. • All 28 damage indicators of the Enhanced Fujita scale • Reference photos and construction details for every indicator • Degrees of damage with expected wind speeds and EF ratings • Interactive wind speed estimator with adjustable bounds • EF0–EF5 rating reference, always a tap away • Everything stored on device — works fully offline in the field Built for storm spotters, damage surveyors, emergency managers, students, and weather enthusiasts. *** PLEASE REMEMBER: This app is for reference purposes only. Doing a real damage survey takes knowledge and experience you can't build into an app! Official damage assessments are the business of the National Weather Service and their delegates! ***

About

Storm Tracker°

Track severe weather events like storms, tornadoes, and hurricanes with real-time radar and forecasts. Get NOAA alerts for floods and other hazards. Monitor weather patterns up to 10 days in advance.

Highlights
  • Live storm tracking
  • Doppler radar for rain and snow
  • NOAA weather warnings and alerts
  • Hourly and 10-day forecasts
  • HD quality map
  • Unlimited locations
Features
Currently charting
Read full description

Track LIVE Storm’s Activity; Check the Weather updates, radar, and get warnings. Follow the storm’s path and its development NOW, and days ahead. Be well-informed. STORM TRACKER - EXTREME WEATHER RADAR Accurate, reliable, and easy-to-navigate Storm Tracker with 1.4M downloads worldwide. The storm tracker app provides 24/7 real-time tracking of several weather patterns like heavy storms, tornadoes, hurricanes, typhoons, tropical storms, cyclones, and other severe weather conditions. FREE ACCESS TO STORM TRACKER Needful Weather Information; • Rain & Snow Radar - Doppler info • 24/7 NOAA Weather Warnings & Alerts on maps for floods, tides, and storms (US only) • Weather charts for temperature, precipitation, wind speed, and pressure information • Detailed Hourly forecasts, up to 10 days • HD quality map • Unlimited Locations SUPPORTED COUNTRIES AND REGIONS NORTH AMERICA: United States*, Canada, Mexico EUROPE: France, United Kingdom, Germany, Spain, Portugal, Netherlands, Switzerland, Norway, Sweden, Finland, Denmark APAC: Japan, Hong Kong, Korea, Taiwan & Australia *Frequent severe weather conditions coverage in Florida, Texas, Alabama, Oklahoma, Kansas, Louisiana, Arkansas, Georgia, Mississippi, North and South Carolina SUBSCRIBE TO PREMIUM ACCESS • Hurricane tracker • Rain Radar; Future precipitation forecasts • Wind Tracker; Map with animated wind direction with a 12-day windy forecast • Ad-free Experience Subscriptions automatically renew each month 24 hours before the end of the current period and your iTunes account will be charged unless auto-renew is turned off at least 24 hours before the end of the current period. You can turn off auto-renew at any time from within the app. Any unused portion of a free trial will be forfeited if you purchase a subscription. Terms & Conditions: https://impalastudios.com/terms Privacy Policy: https://impalastudios.com/privacy UNITS OF MEASUREMENT Fahrenheit/Celsius | Miles/Kilometers | Wind speed in kN, mph, km/h, Beaufort | Barometric Pressure in Inches (inHG) and Atmospheric Pressure in Hectopascal (hPa) YOUR EXPERIENCE IS IMPORTANT TO US! *Please check if the answers are available in the Frequently Asked Questions app Settings. *(FQA) Our support team is very happy with your feedback, questions, and suggestions and is always ready to help you via support@impalastudios.com. Storm Tracker (C) 2014 Impala Studios

Screenshots

EF Scale4 screens
Storm Tracker°4 screens

Verdict

The call

The clearest difference is in-app purchases: EF Scale at none against Storm Tracker°'s 8. EF Scale also leads on ads (none vs shown) and review sentiment (67% vs 46%). Storm Tracker°'s advantage is update cadence (every 2 months vs every 20 months) and ratings volume (82K vs 4). On price, rating 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. Storm Tracker° sells 8 in-app purchases, starting at $2.99 per 7 days. EF Scale asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.5 for EF Scale against 4.6 for Storm Tracker°. That said, the two scores are not equally well evidenced: Storm Tracker° has 82K ratings behind it against 4, so its average is the more settled of the two. Written reviews are what separate them: 67% of EF Scale's written reviews are positive against 46% of Storm Tracker°'s.

UpkeepUpdate frequency

EF Scale ships an update every 20 months, Storm Tracker° every 2 months. The most recent releases landed on October 4, 2026 and October 19, 2026 respectively.

Scorecard8 real differences · 3 level
EF Scale versus Storm Tracker°: the parameters behind the verdict, then further details
ParameterEF ScaleStorm Tracker°
PriceFreeFree
Rating4.5 (4 ratings)4.6 (82K ratings) — better
Positive reviews66.7% of reviews — better46.3% of reviews
Number of ratings482K — better
Update frequencyEvery 20 monthsEvery 2 months — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
Best chart rank—#60 — better
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS26.015.0 — better
Further details — not scored
Size18 MB299 MB
Age rating4+4+
DeveloperWeatherWary LLCImpala Studios

Customer experience

EF Scale

All ratings4 ratings
Positive75.0%
Neutral25.0%
Negative0.0%
Written reviews9 reviews
Positive66.7%
Neutral22.2%
Negative11.1%

Storm Tracker°

All ratings82,275 ratings
Positive91.5%
Neutral4.9%
Negative3.6%
Written reviews283 reviews
Positive46.3%
Neutral8.1%
Negative45.6%

Bugs and requests

EF Scale

Not enough reviews yet to summarise bugs or requests.

Storm Tracker°

Reported bugs

3 issues
  • Weather data not updating in real-time
  • App crashing or freezing on some devices
  • Saved locations not syncing properly

Requested features

4 requests
  • Add wind speed indicator
  • Improve radar coverage in remote areas
  • Provide more customization options
  • Offer a one-time purchase option instead of subscription

In-app purchases

None

EF Scale

No in-app purchases

8 purchases

Storm Tracker°

Subscriptions8
  • Weekly Premium Subscription3 Days trial$2.997 Days
  • Full Access for a Week3 Days trial$3.997 Days
  • Full Access for a Week3 Days trial$4.997 Days
Show 5 more
  • Annual Limited Time Offer$9.991 Year
  • Limited Time Offer$14.991 Year
  • Annual Premium Subscription$19.991 Year
  • Annual full access with no ads$19.991 Year
  • Annual full access with no ads$24.991 Year

Questions

Is EF Scale free?
EF Scale is free to download, with no in-app purchases.
Is Storm Tracker° free?
Storm Tracker° is free to download, with in-app purchases available.
Which has better reviews, EF Scale or Storm Tracker°?
Storm Tracker° is rated higher. EF Scale averages 4.5 out of 5 from 4 ratings, while Storm Tracker° averages 4.6 from 82K ratings.
Do EF Scale or Storm Tracker° have ads?
Storm Tracker° shows ads; EF Scale does not.
Which is updated more often, EF Scale or Storm Tracker°?
EF Scale ships an update every 20 months, and Storm Tracker° every 2 months. Most recently, EF Scale was updated on October 4, 2026 and Storm Tracker° on October 19, 2026.

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