# Hollings Clinical Trials vs PI

Hollings Clinical Trials and PI are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases 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.

Hollings Clinical Trials ships an update monthly, PI every 3 weeks. The most recent releases landed on October 5, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Hollings Clinical Trials | PI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/hollings-clinical-trials/id1612672405/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 31 MB | 14 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 17+ |
| Developer | [The Medical University of South Carolina](https://appshunter.io/developer/1503987548) | [Refuah Solutions LTD](https://appshunter.io/developer/1473298751) |

## What reviewers say

### Hollings Clinical Trials

[App page](https://appshunter.io/ios/app/hollings-clinical-trials/id1612672405)

Find cancer treatment clinical trial opportunities at MUSC Hollings Cancer Center and its network. Filter trials by disease group and patient characteristics to identify suitable research studies. Access study details, contact information, and external resources for eligibility criteria.

**Highlights:** Clinical trial opportunities for cancer treatments, Filter by disease group, Patient characteristic filtering, Access study details and contacts, Links to external eligibility criteria, Contact request for assistance

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

**In-app purchases:** none


### PI

[App page](https://appshunter.io/ios/app/pi-support/id1663142410)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Hollings Clinical Trials free?

Hollings Clinical Trials is free to download, with no in-app purchases.

### Is PI free?

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

### Do Hollings Clinical Trials or PI have ads?

Neither Hollings Clinical Trials nor PI shows ads.

### Which is updated more often, Hollings Clinical Trials or PI?

Hollings Clinical Trials ships an update monthly, and PI every 3 weeks. Most recently, Hollings Clinical Trials was updated on October 5, 2026 and PI on October 21, 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.*