# Protein Guide vs EchoRead

The clearest difference is in-app purchases: Protein Guide at none against EchoRead's 9. Protein Guide also leads on iOS requirement (11.0 vs 15.1). EchoRead's advantage is update cadence (every 2 weeks vs every 9 months). On price, ads and device support there is nothing between them.

Both are free to download. EchoRead sells 9 in-app purchases, starting at $2.99 per 7 days. Protein Guide asks for nothing beyond the download.

Protein Guide ships an update every 9 months, EchoRead every 2 weeks. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Protein Guide | EchoRead |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (45 ratings)](https://appshunter.io/ios/app/protein-guide/id1375157917/reviews)** | — |
| Number of ratings | **45** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 224 MB | 132 MB |
| Requires iOS | **11.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Axton Pitt](https://appshunter.io/developer/957165645) | [Sergei Suslov](https://appshunter.io/developer/6781611507) |

## What reviewers say

### Protein Guide

[App page](https://appshunter.io/ios/app/protein-guide/id1375157917)

Explore the intricate stages of protein structure with detailed diagrams, explanations, and animations. This app serves as a valuable reference for both beginners and experienced individuals, offering insights into unique properties and biological functions.

**Highlights:** Detailed diagrams of protein structure, Explanations of protein stages, Animations of protein structures, Information on unique properties and functions, Example proteins demonstrating structural aspects, ClassKit integration for teachers

**Features:** macOS Compatibility

**In-app purchases:** none


### EchoRead

[App page](https://appshunter.io/ios/app/echoread-ai-language-coach/id6752346085)

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mini | $2.99 | per 7 days |
| Super | $4.99 | per 7 days |
| Unlimited | $4.99 | per 7 days |
| Mini | $6.99 | per month |
| Super | $9.99 | per month |
| Unlimited | $14.99 | per month |
| Mini | $59.99 | per year |
| Super | $99.99 | per year |
| Unlimited | $174.99 | per year |


## Frequently asked questions

### Is Protein Guide free?

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

### Is EchoRead free?

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

### Do Protein Guide or EchoRead have ads?

Neither Protein Guide nor EchoRead shows ads.

### Which is updated more often, Protein Guide or EchoRead?

Protein Guide ships an update every 9 months, and EchoRead every 2 weeks. Most recently, Protein Guide was updated on November 2, 2026 and EchoRead on October 30, 2026.

---

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