# Back and Spinal cord vs Whatzit

The clearest difference is review sentiment: Whatzit at 82% against Back and Spinal cord's 0%. Whatzit also leads on rating (4.7 vs 1.0) and update cadence (every 6 weeks vs every 8 months). Back and Spinal cord's advantage is monetization model (free vs free with in-app purchases) and iOS requirement (9.0 vs 14.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Back and Spinal cord sells 9 one-off in-app purchases and Whatzit sells 3 in-app purchases, starting at $29.99 per month. Whichever you choose, the download price is not the number that matters.

Whatzit holds the better App Store score, 4.7 against 1.0. That said, the two scores are not equally well evidenced: Whatzit has 38 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 0% of Back and Spinal cord's written reviews are positive against 82% of Whatzit's.

Back and Spinal cord ships an update every 8 months, Whatzit every 6 weeks. The most recent releases landed on October 24, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | Back and Spinal cord | Whatzit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (2 ratings)](https://appshunter.io/ios/app/back-and-spinal-cord/id965077138/reviews) | **[4.7 (38 ratings)](https://appshunter.io/ios/app/whatzit/id1133396295/reviews)** |
| Number of ratings | 2 | **38** |
| Positive reviews | 0.0% of reviews | **81.8% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 6 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Best chart rank | — | **#167** |
| Size | 62 MB | 33 MB |
| Requires iOS | **9.0** | 14.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Focus Medica](https://appshunter.io/developer/508294531) | [Essential Ventures LLC](https://appshunter.io/developer/1133396294) |

## What reviewers say

### Back and Spinal cord

[App page](https://appshunter.io/ios/app/back-and-spinal-cord/id965077138)

Explore the anatomy of the back and spinal cord with this comprehensive digital atlas. It features 3D animations, interactive images, and detailed descriptions to help you understand anatomical positions, clinical manifestations, and applied aspects.

**Highlights:** Comprehensive anatomical plates, 3D animated reference tool, Interactive images with labels, Clinical manifestations of conditions, Detailed descriptions, Surface features and dermatomes

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Back - Surface Anatomy | $2.99 | one-time |
| Vertebral column: Overview | $2.99 | one-time |
| Anatomy - Regional vertebra | $2.99 | one-time |
| Anatomy - Spinal: Meninges | $2.99 | one-time |
| Anatomy - Spinal cord | $2.99 | one-time |
| Anatomy -Spinal cord: Internal | $2.99 | one-time |
| Anatomy - Spinal nerves | $2.99 | one-time |
| Digital Anatomy Back Muscles | $2.99 | one-time |
| Back and Spinal cord - Buy All | $12.99 | one-time |


### Whatzit

[App page](https://appshunter.io/ios/app/whatzit/id1133396295)

**Currently charting:** #167 Top Grossing · Medical (US App Store)

This secure platform aids in spine implant identification by allowing users to post X-rays for crowdsourced feedback. It utilizes proprietary AI-powered redaction technology to automatically remove sensitive text from images directly on your device before sharing.

**Highlights:** Spine implant identification, Crowdsourced X-ray feedback, AI-powered auto-redaction, On-device data processing, Secure image sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade to Premium | $29.99 | per month |
| Upgrade to Premium | $179.99 | per year |
| Boost Your Post | $14.99 | one-time |


## Frequently asked questions

### Is Back and Spinal cord free?

Back and Spinal cord is free to download, with in-app purchases available.

### Is Whatzit free?

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

### Which has better reviews, Back and Spinal cord or Whatzit?

Whatzit is rated higher. Back and Spinal cord averages 1.0 out of 5 from 2 ratings, while Whatzit averages 4.7 from 38 ratings.

### Do Back and Spinal cord or Whatzit have ads?

Neither Back and Spinal cord nor Whatzit shows ads.

### Which is updated more often, Back and Spinal cord or Whatzit?

Back and Spinal cord ships an update every 8 months, and Whatzit every 6 weeks. Most recently, Back and Spinal cord was updated on October 24, 2026 and Whatzit on November 1, 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.*