EF Scale

WeatherWary LLC · Weather

4.5 4 ratings Free

Independent analytics for this App Store listing. AppTracker is not affiliated with WeatherWary LLC.

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Chart standing · US

Not currently charting in this storefront.

What changed · US

Listing changes AppTracker has observed for this app in this storefront — new versions, price moves, rating shifts, and store copy.

Oct 11, 2026
Rating ★ 4.33 → 4.5
Oct 10, 2026
Rating ★ 4.5 → 4.33
Oct 2, 2026
Rating ★ 4.33 → 4.5
Oct 1, 2026
Rating ★ 4.5 → 4.33
Oct 1, 2026
Rating ★ 4.33 → 4.5
Sep 30, 2026
Rating ★ 4.5 → 4.33
Sep 24, 2026
Rating ★ 4.33 → 4.5
Sep 24, 2026
Rating ★ 4.5 → 4.33
Sep 19, 2026
Rating ★ 4.33 → 4.5
Sep 17, 2026
Rating ★ 4.5 → 4.33
Sep 9, 2026
Rating ★ 4.33 → 4.5
Sep 8, 2026
Rating ★ 4.5 → 4.33

Price & rating history · US

Reconstructed from the listing changes AppTracker has observed in this storefront. A field is charted once it has changed more than once, and each line starts at the value it moved from.

Average rating history over the observed period. 4.4 4.5 Sep 6 Sep 16 Sep 26 Oct 6 Oct 15

Average rating · ★ 4.50 now · 12 changes on record

Ratings breakdown · US

The star breakdown behind this app's rating in this storefront.

5★ 75% 3
4★ 0% 0
3★ 25% 1
2★ 0% 0
1★ 0% 0

In-app purchases · US

No in-app purchases.

Screenshots

About

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! ***

What's new · 1.6

Updated UI

Details

ReleasedFeb 2011
UpdatedAug 2026
Version1.6
Size18.9 MB
RequiresiOS 26.0 or later
Age rating4+
LanguagesEnglish
PriceFree
Categories WeatherEducation
Bundle IDcom.weatherwary.efscaleu