# Aetrex Achilles vs E

The clearest difference is rating: Aetrex Achilles at 2.8 against E's 1.0. Aetrex Achilles also leads on update cadence (every 2 weeks vs every 3 months) and ratings volume (34 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.

Aetrex Achilles holds the better App Store score, 2.8 against 1.0. That said, the two scores are not equally well evidenced: Aetrex Achilles has 34 ratings behind it against 1, so its average is the more settled of the two.

Aetrex Achilles ships an update every 2 weeks, E every 3 months. The most recent releases landed on October 16, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Aetrex Achilles | E |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.8 (34 ratings)](https://appshunter.io/ios/app/aetrex-achilles/id1536083899/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/e-size/id6445945414/reviews) |
| Number of ratings | **34** | 1 |
| Positive reviews | 22.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 months |
| Monetization | Free | Free |
| Size | 186 MB | 33 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Aetrex Worldwide, Inc.](https://appshunter.io/developer/881021806) | [AIVA LLC](https://appshunter.io/developer/1662107707) |

## What reviewers say

### Aetrex Achilles

[App page](https://appshunter.io/ios/app/aetrex-achilles/id1536083899)

This app utilizes AI and computer vision to accurately measure your feet and determine your median shoe size. Future updates will offer personalized shoe recommendations based on your measurements.

**Highlights:** AI-powered foot measurement, Computer vision technology, Accurate median shoe size determination, Future shoe recommendations

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

**In-app purchases:** none


### E

[App page](https://appshunter.io/ios/app/e-size/id6445945414)

Easily measure your foot size and find the perfect shoe size. Save measurements for yourself and loved ones, and share them to ensure accurate purchases or gifts.

**Highlights:** Measure foot size, Select shoe size, Save multiple measurements, Share measurements, Family and friend profiles

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Aetrex Achilles free?

Aetrex Achilles is free to download, with no in-app purchases.

### Is E free?

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

### Which has better reviews, Aetrex Achilles or E?

Aetrex Achilles is rated higher. Aetrex Achilles averages 2.8 out of 5 from 34 ratings, while E averages 1.0 from 1 ratings.

### Do Aetrex Achilles or E have ads?

Neither Aetrex Achilles nor E shows ads.

### Which is updated more often, Aetrex Achilles or E?

Aetrex Achilles ships an update every 2 weeks, and E every 3 months. Most recently, Aetrex Achilles was updated on October 16, 2026 and E on October 2, 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.*