# THE OCD EXPERT vs ImmuneTracker

The clearest difference is device support: THE OCD EXPERT at 3 against ImmuneTracker's 1. On price, ads, 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.

## The numbers

| Metric | THE OCD EXPERT | ImmuneTracker |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Size | 5 MB | 118 MB |
| Requires iOS | **15.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Emily Sudduth](https://appshunter.io/developer/1721274803) | [University of California at San Francisco](https://appshunter.io/developer/446489325) |

## What reviewers say

### THE OCD EXPERT

[App page](https://appshunter.io/ios/app/the-ocd-expert/id6476935636)

**In-app purchases:** none


### ImmuneTracker

[App page](https://appshunter.io/ios/app/immunetracker/id6758135820)

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

**In-app purchases:** none


## Frequently asked questions

### Is THE OCD EXPERT free?

THE OCD EXPERT is free to download, with no in-app purchases.

### Is ImmuneTracker free?

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

### Do THE OCD EXPERT or ImmuneTracker have ads?

Neither THE OCD EXPERT nor ImmuneTracker 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.*