# Chegg Study vs Protein Purification for iPhone

The clearest difference is review sentiment: Protein Purification for iPhone at 67% against Chegg Study's 20%. Protein Purification for iPhone also leads on in-app purchases (none vs 5) and iOS requirement (7.1 vs 17.0). Chegg Study's advantage is rating (4.7 vs 4.3) and ratings volume (205K vs 4). On price, ads and device support there is nothing between them.

Both are free to download. Chegg Study sells 4 in-app purchases, starting at $15.99 per month. Protein Purification for iPhone asks for nothing beyond the download.

Chegg Study holds the better App Store score, 4.7 against 4.3. That said, the two scores are not equally well evidenced: Chegg Study has 205K ratings behind it against 4, so its average is the more settled of the two. Written reviews complicate that: 20% of Chegg Study's written reviews are positive against 67% of Protein Purification for iPhone's, so the app with the better star average is not the one people write more warmly about.

Chegg Study ships an update every 3 weeks, Protein Purification for iPhone every 2 months. The most recent releases landed on October 26, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | Chegg Study | Protein Purification for iPhone |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (205K ratings)](https://appshunter.io/ios/app/chegg-study-homework-help/id385758163/reviews)** | [4.3 (4 ratings)](https://appshunter.io/ios/app/protein-purification-for-iphone/id558471583/reviews) |
| Number of ratings | **205K** | 4 |
| Positive reviews | 19.8% of reviews | **66.7% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#58** | — |
| Size | 122 MB | 16 MB |
| Requires iOS | 17.0 | **7.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Chegg, Inc.](https://appshunter.io/developer/385758166) | [Simon Booth](https://appshunter.io/developer/1146275430) |

## What reviewers say

### Chegg Study

[App page](https://appshunter.io/ios/app/chegg-study-homework-help/id385758163)

**Currently charting:** #58 Top Grossing · Education (US App Store)

This app provides homework help and personalized study support for millions of students across 80 subjects. Access millions of explained solutions, flashcards, and expert Q&A to master tough concepts and prepare for exams. Utilize AI-powered solutions for quicker assistance.

**Highlights:** Step-by-step explained solutions, Flashcards for subjects, Expert Q&A responses, Homework question scanner, AI-powered solutions, 24/7 study help

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Chegg Study | $15.99 | per month |
| Chegg Study | $15.99 | per month |
| Chegg Study | $15.99 | per month |
| Chegg Study Basic | $15.99 | per month |

**What reviewers like**

- 🚀 Helpful for homework and studying
- 👍 Provides step-by-step solutions
- 💡 Useful for visual learners

**What reviewers complain about**

- 🐛 Incorrect or incomplete answers
- 💰 Expensive subscription
- 🔒 Account suspension issues
- 🤯 Frustrating device management
- 🕰️ Slow response times

**Reported bugs**

- Repeated account suspensions without justification
- Inability to cancel subscription easily
- Blurry image uploads
- Inconsistent login behavior across devices

**Requested features**

- Increase monthly question limit
- Allow more than 2 registered devices
- Improve customer support response times
- Add ability to comment on answers


### Protein Purification for iPhone

[App page](https://appshunter.io/ios/app/protein-purification-for-iphone/id558471583)

This educational app simulates protein separation techniques, allowing users to experiment with different purification protocols. It models common chromatography methods and helps users learn which techniques are most effective for various protein mixtures.

**Highlights:** Protein separation technique simulation, Gel filtration and ion-exchange chromatography, Design and test purification protocols, Experiment with complex protein mixtures, Models success and failure scenarios

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Chegg Study free?

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

### Is Protein Purification for iPhone free?

Protein Purification for iPhone is free to download, with no in-app purchases.

### Which has better reviews, Chegg Study or Protein Purification for iPhone?

Chegg Study is rated higher. Chegg Study averages 4.7 out of 5 from 205K ratings, while Protein Purification for iPhone averages 4.3 from 4 ratings.

### Do Chegg Study or Protein Purification for iPhone have ads?

Neither Chegg Study nor Protein Purification for iPhone shows ads.

### Which is updated more often, Chegg Study or Protein Purification for iPhone?

Chegg Study ships an update every 3 weeks, and Protein Purification for iPhone every 2 months. Most recently, Chegg Study was updated on October 26, 2026 and Protein Purification for iPhone on October 23, 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.*