# Reactive PT vs PrimalOS

The clearest difference is update cadence: PrimalOS at every 2 weeks against Reactive PT's every 16 months. PrimalOS also leads on device support. On price, in-app purchases and iOS requirement there is nothing between them.

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

Reactive PT ships an update every 16 months, PrimalOS every 2 weeks. The most recent releases landed on September 30, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Reactive PT | PrimalOS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/reactive-pt/id1645590081/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | Every 16 months | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 43 MB | 106 MB |
| Requires iOS | **15.1** | 15.6 |
| Devices | — | **iPhone, iPod, Apple Watch** |
| Age rating | 12+ | 4+ |
| Developer | [Reactive Physical Therapy PLLC](https://appshunter.io/developer/1645590083) | [O'Neill Development LLC](https://appshunter.io/developer/1855551360) |

## What reviewers say

### Reactive PT

[App page](https://appshunter.io/ios/app/reactive-pt/id1645590081)

Access your personalized home exercise program with HD instructional videos. Securely message your provider, track progress with awards, and manage appointments. Integrates with your iPhone's Health app for activity monitoring.

**Highlights:** Personalized Home Exercise Program, HD Instructional Videos, Secure Messaging with Provider, Progress Tracking with Awards, Appointment Management, Health App Integration

**In-app purchases:** none


### PrimalOS

[App page](https://appshunter.io/ios/app/primalos/id6745167385)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Reactive PT free?

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

### Is PrimalOS free?

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

### Which is updated more often, Reactive PT or PrimalOS?

Reactive PT ships an update every 16 months, and PrimalOS every 2 weeks. Most recently, Reactive PT was updated on September 30, 2026 and PrimalOS on October 5, 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.*