# OsteotomyApp vs Bone Ninja Sensei

The clearest difference is price: Bone Ninja Sensei at Free against OsteotomyApp's $24.99. Bone Ninja Sensei also leads on update cadence (every 3 months vs every 14 months) and iOS requirement (11.4 vs 15.4). OsteotomyApp's advantage is in-app purchases (none vs 1) and device support (4 vs 1). On ads there is nothing between them.

Bone Ninja Sensei is free to download; OsteotomyApp costs $24.99 up front. Bone Ninja Sensei sells 1 in-app purchase, starting at $14.99 per year. OsteotomyApp asks for nothing beyond the download.

OsteotomyApp ships an update every 14 months, Bone Ninja Sensei every 3 months. The most recent releases landed on October 7, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | OsteotomyApp | Bone Ninja Sensei |
| --- | --- | --- |
| Price | $24.99 | **Free** |
| Rating | — | **[4.5 (2 ratings)](https://appshunter.io/ios/app/bone-ninja-sensei/id6450483301/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 25.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 3 months** |
| Monetization | — | Free with in-app purchases |
| Size | 13 MB | 48 MB |
| Requires iOS | 15.4 | **11.4** |
| Devices | **iPhone, iPad, iPod, Mac** | iPad |
| Age rating | 17+ | 4+ |
| Developer | [ORTHOPRACTIS.COM SINGLE MEMBER P.C.](https://appshunter.io/developer/1286360877) | [LifeBridge Health](https://appshunter.io/developer/460335164) |

## What reviewers say

### OsteotomyApp

[App page](https://appshunter.io/ios/app/osteotomyapp/id1541531012)

**Features:** Vision Pro support

**In-app purchases:** none


### Bone Ninja Sensei

[App page](https://appshunter.io/ios/app/bone-ninja-sensei/id6450483301)

This educational tool, created by orthopedic surgeons, helps medical professionals learn to analyze long bone deformities. It provides tools for drawing, measuring, and simulating osteotomy solutions on provided or uploaded radiographs.

**Highlights:** Analyze long bone deformities, Radiograph analysis tools, Simulate osteotomy solutions, Upload custom radiographs, Drawing and measuring tools, Educational case examples

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Annual Subscription Plan | $14.99 | per year |


## Frequently asked questions

### Is OsteotomyApp free?

OsteotomyApp costs $24.99, with no in-app purchases.

### Is Bone Ninja Sensei free?

Bone Ninja Sensei is free to download, with in-app purchases available.

### Do OsteotomyApp or Bone Ninja Sensei have ads?

Neither OsteotomyApp nor Bone Ninja Sensei shows ads.

### Which is updated more often, OsteotomyApp or Bone Ninja Sensei?

OsteotomyApp ships an update every 14 months, and Bone Ninja Sensei every 3 months. Most recently, OsteotomyApp was updated on October 7, 2026 and Bone Ninja Sensei on September 30, 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.*