# Histology vs Primal's 3D Embryology

The clearest difference is rating: Primal's 3D Embryology at 5.0 against Histology's 3.7. Primal's 3D Embryology also leads on update cadence (monthly vs every 10 months). Histology's advantage is in-app purchases (none vs 1) and iOS requirement (9.0 vs 15.0). On price, ratings volume, ads and monetization model there is nothing between them.

Both are free to download. Primal's 3D Embryology sells 1 one-off in-app purchase. Histology asks for nothing beyond the download.

Primal's 3D Embryology holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 3 and 2 respectively.

Histology ships an update every 10 months, Primal's 3D Embryology monthly. The most recent releases landed on September 10, 2026 and August 18, 2026 respectively.

## The numbers

| Metric | Histology | Primal's 3D Embryology |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (3 ratings)](https://appshunter.io/ios/app/histology-basic-tissues/id1001607947/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/primals-3d-embryology/id6550919173/reviews)** |
| Number of ratings | **3** | 2 |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 months | **Monthly** |
| Monetization | Free | Free |
| Size | 32 MB | 245 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 9+ |
| Developer | [The University of Michigan](https://appshunter.io/developer/380339599) | [Pharma Intelligence UK Ltd](https://appshunter.io/developer/1678054030) |

## What reviewers say

### Histology

[App page](https://appshunter.io/ios/app/histology-basic-tissues/id1001607947)

This study aid offers self-testing with micrographs of basic human body tissues. It covers cell biology, epithelia, glands, connective tissue, muscle, and the peripheral nervous system.

**Highlights:** Micrograph self-testing, Six sets of basic tissue coverage, Cell Biology for Histologists, Epithelia and Glands, Connective Tissue and Muscle, Peripheral Nervous System

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

**In-app purchases:** none


### Primal's 3D Embryology

[App page](https://appshunter.io/ios/app/primals-3d-embryology/id6550919173)

Explore detailed 3D models of human embryo development from weeks 3 to 8. This interactive resource allows medical professionals and students to visualize and study anatomical structures with customizable views and informative labels. Save, export, and share your findings for educational and research purposes.

**Highlights:** Interactive 3D embryo models, Carnegie Stages 7-23 (weeks 3-8), Systemic content browsing, Layered development views, Customizable labels and pins, Save and export favorite views, Shareable URL links

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3D Embryology full access | $59.99 | one-time |


## Frequently asked questions

### Is Histology free?

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

### Is Primal's 3D Embryology free?

Primal's 3D Embryology is free to download, with in-app purchases available.

### Which has better reviews, Histology or Primal's 3D Embryology?

Primal's 3D Embryology is rated higher. Histology averages 3.7 out of 5 from 3 ratings, while Primal's 3D Embryology averages 5.0 from 2 ratings.

### Do Histology or Primal's 3D Embryology have ads?

Neither Histology nor Primal's 3D Embryology shows ads.

### Which is updated more often, Histology or Primal's 3D Embryology?

Histology ships an update every 10 months, and Primal's 3D Embryology monthly. Most recently, Histology was updated on September 10, 2026 and Primal's 3D Embryology on August 18, 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.*