# 3D Brain vs NinerEngage+

3D Brain and NinerEngage+ both sit at 3.6 stars, but that hides the real split: 75% of 3D Brain's written reviews are positive against 33% of NinerEngage+'s. 3D Brain also leads on ratings volume (146 vs 9) and iOS requirement (6.0 vs 13.4). NinerEngage+'s advantage is in-app purchases (none vs 1) and update cadence (every 3 weeks vs every 2 months). On price, rating, ads and device support there is nothing between them.

Both are free to download. 3D Brain sells 1 one-off in-app purchase. NinerEngage+ asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 3.6 for 3D Brain against 3.8 for NinerEngage+. That said, the two scores are not equally well evidenced: 3D Brain has 146 ratings behind it against 9, so its average is the more settled of the two. Written reviews are what separate them: 75% of 3D Brain's written reviews are positive against 33% of NinerEngage+'s.

3D Brain ships an update every 2 months, NinerEngage+ every 3 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | 3D Brain | NinerEngage+ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.6 (146 ratings)](https://appshunter.io/ios/app/3d-brain/id331399332/reviews) | **[3.8 (9 ratings)](https://appshunter.io/ios/app/ninerengage-plus/id6451224703/reviews)** |
| Number of ratings | **146** | 9 |
| Positive reviews | **75.2% of reviews** | 33.3% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 70 MB | 45 MB |
| Requires iOS | **6.0** | 13.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Cold Spring Harbor Laboratory](https://appshunter.io/developer/331399335) | [Navengage Education Technologies LLC](https://appshunter.io/developer/1547439399) |

## What reviewers say

### 3D Brain

[App page](https://appshunter.io/ios/app/3d-brain/id331399332)

Explore a 3D model of the human brain, rotating and zooming to examine 29 interactive structures. Learn about the function of each region, the effects of injury, and its role in mental illness. Detailed information includes case studies and research links.

**Highlights:** 3D brain model, Interactive structures, Region functions, Brain injury effects, Mental illness involvement, Case studies, Research links

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3D Brain HQ | $0.99 | one-time |

**What reviewers like**

- 🧠 Informative brain visualizations
- 👍 Helpful for psychology/neuroscience students
- 🔍 Detailed information and case studies
- 🤓 Excellent learning tool

**What reviewers complain about**

- 🐛 App crashes after updates
- 🤯 Upgrade causes app to stop working
- 📱 Compatibility issues with newer devices
- 🔍 Limited brain structures covered

**Reported bugs**

- App crashes on launch after upgrade
- Purchased premium version not functioning
- Laggy performance and blurry images
- No way to exit app other than force closing

**Requested features**

- More brain structures and regions
- Improved 3D navigation and controls
- Ability to label and annotate the brain
- Quizzes and interactive learning features


### NinerEngage+

[App page](https://appshunter.io/ios/app/ninerengage-plus/id6451224703)

Discover campus events, student organizations, and essential resources all in one convenient place. This app simplifies navigation and keeps you informed about activities at Charlotte.

**Highlights:** Event discovery, Student organization listings, Resource navigation, Campus activity updates, Easy-to-use interface

**In-app purchases:** none


## Frequently asked questions

### Is 3D Brain free?

3D Brain is free to download, with in-app purchases available.

### Is NinerEngage+ free?

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

### Which has better reviews, 3D Brain or NinerEngage+?

NinerEngage+ is rated higher. 3D Brain averages 3.6 out of 5 from 146 ratings, while NinerEngage+ averages 3.8 from 9 ratings.

### Do 3D Brain or NinerEngage+ have ads?

Neither 3D Brain nor NinerEngage+ shows ads.

### Which is updated more often, 3D Brain or NinerEngage+?

3D Brain ships an update every 2 months, and NinerEngage+ every 3 weeks. Most recently, 3D Brain was updated on October 24, 2026 and NinerEngage+ on October 24, 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.*