# PatienTrials vs eResearch

The clearest difference is monetization model: PatienTrials at free against eResearch's free with in-app purchases. PatienTrials also leads on rating (5.0 vs 4.7) and device support (4 vs 2). eResearch's advantage is ratings volume (87 vs 1). On price, update cadence, ads and in-app purchases there is nothing between them.

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

PatienTrials holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: eResearch has 87 ratings behind it against 1, so its average is the more settled of the two.

Both ship on a similar rhythm, roughly every 5 weeks. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | PatienTrials | eResearch |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/patientrials/id1386748565/reviews)** | [4.7 (87 ratings)](https://appshunter.io/ios/app/eresearch/id1515467795/reviews) |
| Number of ratings | 1 | **87** |
| Positive reviews | — | 89.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | Every 5 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 122 MB | 136 MB |
| Requires iOS | 16.4 | **15.1** |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [PatienTrials Inc](https://appshunter.io/developer/1386748564) | [Rose Research Center,LLC](https://appshunter.io/developer/1501685429) |

## 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, Apple Watch app, Vision Pro support

**In-app purchases:** none


### eResearch

[App page](https://appshunter.io/ios/app/eresearch/id1515467795)

Participate in clinical research from home to help advance smoking cessation and harm reduction. This platform connects volunteers with studies focused on nicotine addiction, offering remote participation, online consent, and compensation. Advance science and contribute to a healthier future.

**Highlights:** Volunteer registration for nicotine users, Online eConsent process, Compensation for participation, Remote study assessments, Telemedicine visits, Secure participant communication

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 User friendly and easy to use
- 👍 Helpful and thorough recruiters
- 👍 Consistent and on-time notifications
- 👍 Great for keeping up with studies
- 👍 Easy to navigate, even for less tech-savvy users

**What reviewers complain about**

- 🐛 Difficult to reset email
- 🐛 App notifications cannot be turned on outside the app
- 🐛 Surveys sometimes not sent
- 🐛 No taste (for Juul product)
- 🐛 Annoying review requests daily

**Reported bugs**

- Difficult to reset email
- App notifications cannot be turned on outside the app
- Surveys sometimes not sent

**Requested features**

- Allow users to turn on app notifications outside the app


## Frequently asked questions

### Is PatienTrials free?

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

### Is eResearch free?

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

### Which has better reviews, PatienTrials or eResearch?

PatienTrials is rated higher. PatienTrials averages 5.0 out of 5 from 1 ratings, while eResearch averages 4.7 from 87 ratings.

### Do PatienTrials or eResearch have ads?

Neither PatienTrials nor eResearch shows ads.

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

PatienTrials ships an update every 5 weeks, and eResearch every 5 weeks. Most recently, PatienTrials was updated on November 2, 2026 and eResearch on November 3, 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.*