# OsteoMaster vs IAA App

The clearest difference is review sentiment: IAA App at 100% against OsteoMaster's 6%. IAA App also leads on price (Free vs $24.99) and update cadence (every 2 days vs weekly). OsteoMaster's advantage is iOS requirement (8.0 vs 13). On ads, in-app purchases and device support there is nothing between them.

IAA App is free to download; OsteoMaster costs $24.99 up front. Neither carries in-app purchases, so what you see is what you pay.

OsteoMaster ships an update weekly, IAA App every 2 days. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | OsteoMaster | IAA App |
| --- | --- | --- |
| Price | $24.99 | **Free** |
| Positive reviews | 5.9% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Weekly | **Every 2 days** |
| Monetization | Paid | **Free** |
| Size | 24 MB | 37 MB |
| Requires iOS | **8.0** | 13 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Chu An Luo](https://appshunter.io/developer/1257642394) | [Manoj Khemani](https://appshunter.io/developer/1888002850) |

## What reviewers say

### OsteoMaster

[App page](https://appshunter.io/ios/app/osteomaster/id1257642395)

This medical app assists surgeons with preoperative planning for bone osteotomy procedures. It allows users to input bone images and calculate various measurements, angles, and corrections needed for surgery. The tool simulates correction results, aiding in precise surgical planning.

**Highlights:** Measure bone angles, Calculate preoperative weight-bearing line, Automate correction calculations, Plan with wedge or cut options, Simulate correction results

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

**In-app purchases:** none


### IAA App

[App page](https://appshunter.io/ios/app/iaa-app/id6761144088)

This app serves as a central hub for joint replacement surgery information in India. It provides real-time updates, event details, and a network for orthopaedic professionals to connect and share insights.

**Highlights:** Real-time association news and updates, Event and conference schedules, Connect with orthopaedic professionals, Secure access to resources, Optimized for iPhone and iPad

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

**In-app purchases:** none


## Frequently asked questions

### Is OsteoMaster free?

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

### Is IAA App free?

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

### Do OsteoMaster or IAA App have ads?

Neither OsteoMaster nor IAA App shows ads.

### Which is updated more often, OsteoMaster or IAA App?

OsteoMaster ships an update weekly, and IAA App every 2 days. Most recently, OsteoMaster was updated on November 6, 2026 and IAA App on October 31, 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.*