# EF Scale vs SunLocation

The clearest difference is review sentiment: EF Scale at 67% against SunLocation's 12%. EF Scale also leads on rating (4.5 vs 3.0) and in-app purchases (none vs 1). SunLocation's advantage is update cadence (every 6 weeks vs every 20 months) and iOS requirement (11.0 vs 26.0). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. SunLocation sells 1 one-off in-app purchase. EF Scale asks for nothing beyond the download.

EF Scale holds the better App Store score, 4.5 against 3.0. Both are backed by a comparable volume of ratings — 4 and 2 respectively. Written reviews point the same way: 67% of EF Scale's written reviews are positive against 12% of SunLocation's.

EF Scale ships an update every 20 months, SunLocation every 6 weeks. The most recent releases landed on August 8, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | EF Scale | SunLocation |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (4 ratings)](https://appshunter.io/ios/app/ef-scale/id418856071/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/sunlocation/id861850891/reviews) |
| Number of ratings | **4** | 2 |
| Positive reviews | **66.7% of reviews** | 12.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 20 months | **Every 6 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 18 MB | 17 MB |
| Requires iOS | 26.0 | **11.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [WeatherWary LLC](https://appshunter.io/developer/418856074) | [Yoshitaka Watanabe](https://appshunter.io/developer/599401659) |

## 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


### SunLocation

[App page](https://appshunter.io/ios/app/sunlocation/id861850891)

This app displays the current sun's position and altitude, synchronizing with your device's compass. It also offers an optional add-on to hide ads and view moon positions, phases, and altitude graphs.

**Highlights:** Current sun position and altitude, Compass synchronization, Moon position and phases display, Altitude graphs for sun and moon, Distance graph for the moon, Ad-free option with add-on

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Moon position and age, etc. | $0.99 | one-time |


## Frequently asked questions

### Is EF Scale free?

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

### Is SunLocation free?

SunLocation is free to download, with in-app purchases available.

### Which has better reviews, EF Scale or SunLocation?

EF Scale is rated higher. EF Scale averages 4.5 out of 5 from 4 ratings, while SunLocation averages 3.0 from 2 ratings.

### Do EF Scale or SunLocation have ads?

Neither EF Scale nor SunLocation shows ads.

### Which is updated more often, EF Scale or SunLocation?

EF Scale ships an update every 20 months, and SunLocation every 6 weeks. Most recently, EF Scale was updated on August 8, 2026 and SunLocation on September 13, 2026.

---

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