# MDI Align vs Performance Optimal Health

MDI Align and Performance Optimal Health are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

## The numbers

| Metric | MDI Align | Performance Optimal Health |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Size | 94 MB | 43 MB |
| Requires iOS | **14.1** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [RTI International](https://appshunter.io/developer/549719529) | [Performance Health Care Management LLC](https://appshunter.io/developer/1727757557) |

## What reviewers say

### MDI Align

[App page](https://appshunter.io/ios/app/mdi-align/id1612840509)

**Features:** macOS Compatibility

**In-app purchases:** none


### Performance Optimal Health

[App page](https://appshunter.io/ios/app/performance-optimal-health/id6793996884)

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

**In-app purchases:** none


## Frequently asked questions

### Is MDI Align free?

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

### Is Performance Optimal Health free?

Performance Optimal Health is free to download, with no in-app purchases.

### Do MDI Align or Performance Optimal Health have ads?

Neither MDI Align nor Performance Optimal Health shows ads.

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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.*