# Protein Guide vs Human Cells..

The clearest difference is in-app purchases: Protein Guide at none against Human Cells..'s 2. Protein Guide also leads on ads (none vs shown) and iOS requirement (11.0 vs 15.0). Human Cells..'s advantage is update cadence (weekly vs every 9 months). On price and device support there is nothing between them.

Both are free to download. Human Cells.. sells 2 in-app purchases, starting at $1.99 per month. Protein Guide asks for nothing beyond the download.

Protein Guide ships an update every 9 months, Human Cells.. weekly. The most recent releases landed on October 16, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Protein Guide | Human Cells.. |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (36 ratings)](https://appshunter.io/ios/app/protein-guide/id1375157917/reviews)** | — |
| Number of ratings | **36** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 9 months | **Weekly** |
| Monetization | Free | — |
| Size | 224 MB | 174 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Axton Pitt](https://appshunter.io/developer/957165645) | [Olga Ivanova](https://appshunter.io/developer/1733570435) |

## 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


### Human Cells..

[App page](https://appshunter.io/ios/app/human-cells/id6749825867)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| subscription | $1.99 | per month |
| sponsorship | $1.99 | one-time |


## Frequently asked questions

### Is Protein Guide free?

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

### Is Human Cells.. free?

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

### Do Protein Guide or Human Cells.. have ads?

Human Cells.. shows ads; Protein Guide does not.

### Which is updated more often, Protein Guide or Human Cells..?

Protein Guide ships an update every 9 months, and Human Cells.. weekly. Most recently, Protein Guide was updated on October 16, 2026 and Human Cells.. on October 14, 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.*