# EF Scale vs BAM Weather

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.

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.

## The numbers

| Metric | EF Scale | BAM Weather |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (4 ratings)](https://appshunter.io/ios/app/ef-scale/id418856071/reviews) | [4.5 (101 ratings)](https://appshunter.io/ios/app/bam-weather/id6446802686/reviews) |
| Number of ratings | 4 | **101** |
| Positive reviews | **66.7% of reviews** | 56.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 20 months | **Every 9 days** |
| Monetization | Free | Free |
| Size | 18 MB | 42 MB |
| Requires iOS | 26.0 | **15.1** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [WeatherWary LLC](https://appshunter.io/developer/418856074) | [BAMWX LLC](https://appshunter.io/developer/731917799) |

## What reviewers say

### EF Scale

[App page](https://appshunter.io/ios/app/ef-scale/id418856071)

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:** Vision Pro support

**In-app purchases:** none


### BAM Weather

[App page](https://appshunter.io/ios/app/bam-weather/id6446802686)

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.

**Highlights:** 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

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is EF Scale free?

EF Scale is free to download, with no in-app purchases.

### Is BAM Weather free?

BAM Weather is free to download, with no in-app purchases.

### Which has better reviews, EF Scale or BAM Weather?

EF Scale and BAM Weather are both rated 4.5 out of 5 on the App Store, from 4 and 101 ratings respectively.

### Do EF Scale or BAM Weather have ads?

Neither EF Scale nor BAM Weather shows ads.

### Which is updated more often, EF Scale or BAM Weather?

EF Scale ships an update every 20 months, and BAM Weather every 9 days. Most recently, EF Scale was updated on October 4, 2026 and BAM Weather on October 17, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*