EF Scale vs Unity Weather
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Simplified EF Scale assessment
- Damage indicator selection
- Degree of damage input
- Construction variability adjustment
- Visual damage examples
- About and share functions
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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! ***
Unity Weather
This weather application displays all measurements in both metric and imperial units simultaneously. It provides temperature in Fahrenheit and Celsius, wind speed in km/h and mph, and pressure in hPa and inHg, among other metrics.
- Dual unit display (metric & imperial)
- Temperature in °F and °C
- Wind speed in km/h and mph
- Pressure in hPa and inHg
- Future feature roadmap available
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UnityWeather is a simple weather app for your phone. What makes it unique is that it shows the measurements in both metric in imperial. Temperature shows Fahrenheit and Celsius, wind in km/h and mph, pressure in hPa and inHg, and so on. To see what we have planned for future versions, and to request new features check out https://unityweather.app/roadmap
Screenshots
Verdict
The clearest difference is rating: EF Scale at 4.5 against Unity Weather's 3.8. EF Scale also leads on review sentiment (67% vs 25%). Unity Weather's advantage is update cadence (every 5 months vs every 20 months) and iOS requirement (16.0 vs 26.0). On price, ratings volume, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
EF Scale holds the better App Store score, 4.5 against 3.8. Both are backed by a comparable volume of ratings — 4 and 4 respectively. Written reviews point the same way: 67% of EF Scale's written reviews are positive against 25% of Unity Weather's.
EF Scale ships an update every 20 months, Unity Weather every 5 months. The most recent releases landed on August 8, 2026 and September 20, 2026 respectively.
| Parameter | EF Scale | Unity Weather |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (4 ratings) — better | 3.8 (4 ratings) |
| Positive reviews | 66.7% of reviews — better | 25.0% of reviews |
| Number of ratings | 4 | 4 |
| Update frequency | Every 20 months | Every 5 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, Mac — better | iPhone, iPad |
| Requires iOS | 26.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 18 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | WeatherWary LLC | Joel Rainwater |
Customer experience
EF Scale
Unity Weather
In-app purchases
EF Scale
No in-app purchases
Unity Weather
No in-app purchases
Questions
Is EF Scale free?
Is Unity Weather free?
Which has better reviews, EF Scale or Unity Weather?
Do EF Scale or Unity Weather have ads?
Which is updated more often, EF Scale or Unity Weather?
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