Patient Cloud vs REMAIN!
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Patient Cloud
This app streamlines patient engagement and data collection for clinical trials. It allows patients to easily participate in studies by answering questionnaires on their mobile devices, while healthcare professionals and researchers can manage invitations and access real-time data.
- ePRO, ClinRO, and site mode functionality
- Patient engagement and data management
- Clinical trial participation via mobile
- Questionnaire completion from home
- Patient invitation and health data collection
- Integration with Medidata Rave
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Medidata Patient Cloud eCOA provides a single app for ePRO, ClinROs and site mode functionality to better integrate workflows. It changes the information flow and management of patient engagement for patients, clinical researchers, and healthcare professionals. A single app for all users enables clinicians and investigators to assist patients with accessing PRO instruments where appropriate. Patients: Download Patient Cloud eCOA app for free, receive an invitation from your doctor and you can participate in a clinical trial — it's that easy! Patient Cloud eCOA lets you answer clinical trial questionnaires from the comfort of your own home, or wherever is convenient for you. Healthcare professionals: Patient Cloud eCOA allows you to invite patients to your studies and have them provide health data using their mobile devices. Patient Cloud eCOA simplifies the patient reported component of your clinical trials. Clinical Researchers: Patient Cloud eCOA is part of the Medidata platform, including Medidata Rave®. It frees you from reliance on proprietary devices and reduces study setup time and effort. By leveraging Rave, you can build your own questionnaires and easily make them available for patients. Entered data is accessible to you and your partners immediately. As part of the Medidata platform, the full functionality of the platform is at your fingertips. Contact Medidata Solutions today to get started right away!
REMAIN!
This research study app provides health and wellness information and resources for adults in the United States. It covers various health and lifestyle topics to support users' diverse needs. Access requires a specific code provided through the research study.
- Health and wellness information
- Lifestyle topic coverage
- Research study participation
- Resource provision
- Targeted for US adults
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REMAIN is a research study app designed to provide health and wellness information and resources relevant to adults in the United States. REMAIN covers a range of health and lifestyle topics to support users’ diverse backgrounds and varying needs over time. The principal investigators for this study are Pamina Gorbach, DrPH, at the University of California, Los Angeles, Lisa Hightow-Weidman, MD, MPH, at Florida State University, and Sean Young, PhD, at the University of California, Irvine. The HMP platform was created by Lisa Hightow-Weidman, a public health scientist. HMP users need a code to open the app. To learn more about the study, email RemainApp@ph.ucla.edu. This mobile app is intended for informational, educational and research purposes only. No content in this app is intended to substitute for professional medical advice, diagnosis or treatment. While we do have board certified health care providers on our team, we are not YOUR health care provider. Participation in this app does not establish any kind of patient-client relationship. Although we strive to provide accurate general information, the content presented in the app is not a substitute for professional advice. Always seek the advice of YOUR physician or another qualified health care provider in your area with any questions you may have regarding a medical condition or treatment and before undertaking a new health care regimen, and never delay in seeking medical treatment because of something you read on this app. If you think you may have a medical emergency, immediately dial 911.
Screenshots
Verdict
The clearest difference is rating: REMAIN! at 4.0 against Patient Cloud's 2.6. Patient Cloud's advantage is ratings volume (113 vs 4) and iOS requirement (12.0 vs 15.1). On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
REMAIN! holds the better App Store score, 4.0 against 2.6. That said, the two scores are not equally well evidenced: Patient Cloud has 113 ratings behind it against 4, so its average is the more settled of the two.
Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 15, 2026 and October 11, 2026 respectively.
| Parameter | Patient Cloud | REMAIN! |
|---|---|---|
| Price | Free | Free |
| Rating | 2.6 (113 ratings) | 4.0 (4 ratings) — better |
| Positive reviews | 6.7% of reviews | — |
| Number of ratings | 113 — better | 4 |
| Update frequency | Monthly | Monthly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 95 MB | 44 MB |
| Age rating | 4+ | 17+ |
| Developer | Medidata Solutions Worldwide | Florida State University |
Customer experience
Patient Cloud
REMAIN!
In-app purchases
Patient Cloud
No in-app purchases
REMAIN!
No in-app purchases









