EF Scale vs BAM 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
Read full descriptionHide 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! ***
BAM Weather
Get critical weather insights and forecasts directly from meteorologists. This app offers detailed hourly and daily commentary, 24/7 chat with experts, and actionable forecast information to help you make smart decisions.
- Forecast insights from meteorologists
- 24/7 chat with meteorologists
- Actionable forecast information
- High-resolution radar with interactive tools
- Location-specific hourly and 10-day forecasts
- Agriculture and road condition forecasts
- Long-range outlooks and video updates
Read full descriptionHide full description
BAM Weather combines advanced weather technology with direct access to expert meteorologists, helping you make faster, smarter, and safer decisions. Unlike generic forecasts, BAM Weather delivers location-specific insights, actionable guidance, and real-time communication from our team when weather matters most. Key Features - Forecast insights from professional meteorologists - 24/7 chat access to our weather team - Interactive radar and high-resolution precipitation tracking - Detailed hourly and 10-day forecasts - Agriculture tools including soil temps, spray forecasts, and GDU data - Custom lightning and severe weather alerts - Road condition and pavement temperature forecasts - Long-range outlooks with daily video updates - Proactive push notifications during impactful weather BAM Weather was built to close the gap between automated forecasts and human expertise, giving you a clearer, more reliable way to stay ahead of the weather.
Screenshots
Verdict
The clearest difference is update cadence: BAM Weather at every 9 days against EF Scale's every 20 months. BAM Weather also leads on ratings volume (101 vs 4) and iOS requirement (15.1 vs 26.0). EF Scale's advantage is review sentiment (67% vs 56%). On price, rating, 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.
On the App Store both sit at effectively the same score — 4.5 for EF Scale against 4.5 for BAM Weather. That said, the two scores are not equally well evidenced: BAM Weather has 101 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 56% of BAM Weather's.
EF Scale ships an update every 20 months, BAM Weather every 9 days. The most recent releases landed on October 4, 2026 and October 17, 2026 respectively.
| Parameter | EF Scale | BAM Weather |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (4 ratings) | 4.5 (101 ratings) |
| Positive reviews | 66.7% of reviews — better | 56.3% of reviews |
| Number of ratings | 4 | 101 — better |
| Update frequency | Every 20 months | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Requires iOS | 26.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 18 MB | 42 MB |
| Age rating | 4+ | 4+ |
| Developer | WeatherWary LLC | BAMWX LLC |
Customer experience
EF Scale
BAM Weather
In-app purchases
EF Scale
No in-app purchases
BAM Weather
No in-app purchases









