# Kriz Physical Therapy vs Run AiK

The clearest difference is in-app purchases: Kriz Physical Therapy at none against Run AiK's 7. Kriz Physical Therapy also leads on iOS requirement (13.4 vs 18.0). Run AiK's advantage is update cadence (monthly vs every 4 months). On price, ads and device support there is nothing between them.

Both are free to download. Run AiK sells 7 in-app purchases, starting at $4.99 per month. Kriz Physical Therapy asks for nothing beyond the download.

Kriz Physical Therapy ships an update every 4 months, Run AiK monthly. The most recent releases landed on October 3, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Kriz Physical Therapy | Run AiK |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Monthly** |
| Size | 31 MB | 225 MB |
| Requires iOS | **13.4** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Kriz Physical Therapy, PA](https://appshunter.io/developer/1656243481) | [AIKYNETIX LLC](https://appshunter.io/developer/1565394041) |

## What reviewers say

### Kriz Physical Therapy

[App page](https://appshunter.io/ios/app/kriz-physical-therapy/id6444703062)

**Features:** macOS Compatibility

**In-app purchases:** none


### Run AiK

[App page](https://appshunter.io/ios/app/run-aik/id6741048150)

**Features:** macOS Compatibility

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Basic | $4.99 | per month |
| Pro | $19.99 | per month |
| Premium | $44.99 | per month |
| Basic | $53.99 | per year |
| Pro | $204.99 | per year |
| Premium | $439.99 | per year |
| Offline Processing | $1.99 | one-time |


## Frequently asked questions

### Is Kriz Physical Therapy free?

Kriz Physical Therapy is free to download, with no in-app purchases.

### Is Run AiK free?

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

### Do Kriz Physical Therapy or Run AiK have ads?

Neither Kriz Physical Therapy nor Run AiK shows ads.

### Which is updated more often, Kriz Physical Therapy or Run AiK?

Kriz Physical Therapy ships an update every 4 months, and Run AiK monthly. Most recently, Kriz Physical Therapy was updated on October 3, 2026 and Run AiK on October 17, 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.*