# EF Scale vs Disaster Watch

The clearest difference is rating: Disaster Watch at 5.0 against EF Scale's 4.5. Disaster Watch also leads on update cadence (every 2 days vs every 20 months) and iOS requirement (8.0 vs 26.0). EF Scale's advantage is ratings volume (4 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Disaster Watch holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

EF Scale ships an update every 20 months, Disaster Watch every 2 days. The most recent releases landed on October 4, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | EF Scale | Disaster Watch |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (4 ratings)](https://appshunter.io/ios/app/ef-scale/id418856071/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/disaster-watch/id1128050009/reviews)** |
| Number of ratings | **4** | 1 |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 20 months | **Every 2 days** |
| Monetization | Free | Free |
| Size | 18 MB | 32 MB |
| Requires iOS | 26.0 | **8.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [WeatherWary LLC](https://appshunter.io/developer/418856074) | [Mohamed Maail](https://appshunter.io/developer/578867563) |

## 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


### Disaster Watch

[App page](https://appshunter.io/ios/app/disaster-watch/id1128050009)

Receive timely alerts for weather, earthquakes, and tsunamis directly from Maldivian authorities. This application is designed to keep you informed and safe.

**Highlights:** Weather alerts, Earthquake alerts, Tsunami alerts, Official alerts from Maldivian authorities, Safety information

**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 Disaster Watch free?

Disaster Watch is free to download, with no in-app purchases.

### Which has better reviews, EF Scale or Disaster Watch?

Disaster Watch is rated higher. EF Scale averages 4.5 out of 5 from 4 ratings, while Disaster Watch averages 5.0 from 1 ratings.

### Do EF Scale or Disaster Watch have ads?

Neither EF Scale nor Disaster Watch shows ads.

### Which is updated more often, EF Scale or Disaster Watch?

EF Scale ships an update every 20 months, and Disaster Watch every 2 days. Most recently, EF Scale was updated on October 4, 2026 and Disaster Watch on October 8, 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.*