# PatienTrials vs PI

The clearest difference is update cadence: PI at fortnightly against PatienTrials's every 6 weeks. PI also leads on iOS requirement (12.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

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

PatienTrials ships an update every 6 weeks, PI fortnightly. The most recent releases landed on June 24, 2026 and June 20, 2026 respectively.

## The numbers

| Metric | PatienTrials | PI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/patientrials/id1386748565/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Fortnightly** |
| Monetization | Free | — |
| Size | 103 MB | 21 MB |
| Requires iOS | 15.1 | **12.0** |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [PatienTrials Inc](https://appshunter.io/developer/1386748564) | [Refuah Solutions Ltd](https://appshunter.io/developer/1473298751) |

## What reviewers say

### PatienTrials

[App page](https://appshunter.io/ios/app/patientrials/id1386748565)

This platform facilitates virtual clinical trials for pharmaceutical companies and clinicians, enhancing efficiency and patient adherence. It leverages instant messaging, HealthKit, AI, and bots to capture high-quality patient data and monitor for adverse events, reducing study risk and development costs.

**Highlights:** Virtual clinical trial management, HIPAA & GDPR compliant platform, Patient adherence improvement, AI-powered adverse event monitoring, High-quality patient-generated data, Instant messaging integration

**Features:** macOS Compatibility

**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 PatienTrials free?

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

### Is PI free?

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

### Do PatienTrials or PI have ads?

Neither PatienTrials nor PI shows ads.

### Which is updated more often, PatienTrials or PI?

PatienTrials ships an update every 6 weeks, and PI fortnightly. Most recently, PatienTrials was updated on June 24, 2026 and PI on June 20, 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.*