YPrime vs REMAIN!
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
YPrime
Manage your clinical study tasks conveniently from your personal device. Log in using your enrollment ID to complete training and stay connected to your study activities, fitting them into your daily schedule.
- Log in and review study tasks
- Complete clinical study activities
- Manage tasks at your own pace
- Stay connected to your study
- Use on personal devices
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Log in, review, and finish clinical study activities at places and times that fit your daily lifestyle. Download this app on your personal device. Use the enrollment ID provided by your healthcare provider to create your unique login code, then finish your training. Stay connected to your clinical study by using YPrime. This app is only available to those taking part in a sponsored clinical study.
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: YPrime at 5.0 against REMAIN!'s 4.0. REMAIN!'s advantage is ratings volume (4 vs 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.
YPrime holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 4 respectively.
YPrime ships an update every 3 weeks, REMAIN! monthly. The most recent releases landed on October 4, 2026 and October 11, 2026 respectively.
| Parameter | YPrime | REMAIN! |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 4.0 (4 ratings) |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 1 | 4 — better |
| Update frequency | Every 3 weeks — better | Monthly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 109 MB | 44 MB |
| Age rating | 4+ | 17+ |
| Developer | Y-Prime | Florida State University |
Customer experience
YPrime
REMAIN!
In-app purchases
YPrime
No in-app purchases
REMAIN!
No in-app purchases









