# Nexus Spine vs Chartrix

The clearest difference is update cadence: Chartrix at every 5 days against Nexus Spine's every 2 months. Nexus Spine's advantage is iOS requirement (12.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Nexus Spine ships an update every 2 months, Chartrix every 5 days. The most recent releases landed on October 8, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Nexus Spine | Chartrix |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/nexus-spine/id1465218381/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 days** |
| Monetization | Free | — |
| Size | 42 MB | 19 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 17+ |
| Developer | [Nexus Orthopaedics L.L.C.](https://appshunter.io/developer/1236866776) | [CodersHigh](https://appshunter.io/developer/1881449719) |

## What reviewers say

### Nexus Spine

[App page](https://appshunter.io/ios/app/nexus-spine/id1465218381)

This medical application assists surgeons in spinal fixation procedures by providing guidance on screw insertion angles. It offers a tool to help ensure accurate placement during surgery. Further usage instructions are available on the developer's website.

**Highlights:** Screw insertion angle guidance, Spinal fixation procedures, Surgical assistance tool, Accuracy enhancement

**Features:** macOS Compatibility

**In-app purchases:** none


### Chartrix

[App page](https://appshunter.io/ios/app/chartrix/id6761618126)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Nexus Spine free?

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

### Is Chartrix free?

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

### Do Nexus Spine or Chartrix have ads?

Neither Nexus Spine nor Chartrix shows ads.

### Which is updated more often, Nexus Spine or Chartrix?

Nexus Spine ships an update every 2 months, and Chartrix every 5 days. Most recently, Nexus Spine was updated on October 8, 2026 and Chartrix on October 25, 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.*