UCSF Eureka Research vs Skinly
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
UCSF Eureka Research
Participate in real medical research studies from your smartphone to help solve major health issues. Contribute to world-changing research with top universities and make a significant impact on causes you care about.
- Join medical research studies
- Contribute to health problem solutions
- Participate via smartphone
- Support top research universities
- Track impact on health causes
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Eureka makes it easy to join real medical studies and help solve the world’s biggest health problems—including heart disease, diabetes, cancer, mental illness, healthcare inequities and more. It’s now easier than ever to have a big impact on causes you care about . All it takes to contribute to world-changing research with Eureka is a smartphone and a little bit of free time. Team up with millions of other study participants helping top researchers from research universities like UCSF, Harvard, and Johns Hopkins to answer questions like, “What signals from my smartphone might predict heart disease?” and “How does physical activity affect cancer risk?” Eureka is a non-profit resource built by researchers at the University of California, San Francisco with support from the National Institutes of Health. If you have questions about signing up or your current participation, reach out to us at support@eurekaplatform.org. For the studies that are on our app, we are not currently pulling HealthKit data but are collecting approval for future use. We use the CareKit framework in our application but do not connect to it in any other way.
Skinly
This application is part of a closed study focused on facial skin analysis. It requires a separate device and an invitation-only access code for study participants to guide measurement procedures and track progress.
- Facial skin analysis
- Guided measurement procedures
- Progress tracking
- Closed study participation
- Requires separate device
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The Skinly app is part of a closed study on facial skin. A separate device is required to use the app. INVITATION ONLY: Device and access code to use the app are only available to participants of the closed Skinly study. The Skinly app guides the study participants through measurement procedures and keeps track of their progress. The application phase for the study is closed.
Screenshots
Verdict
The clearest difference is ratings volume: UCSF Eureka Research at 329 against Skinly's 10. On price, rating, review sentiment and update cadence 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.
On the App Store both sit at effectively the same score — 3.1 for UCSF Eureka Research against 3.2 for Skinly. That said, the two scores are not equally well evidenced: UCSF Eureka Research has 329 ratings behind it against 10, so its average is the more settled of the two. Written reviews are what separate them: 22% of UCSF Eureka Research's written reviews are positive against 28% of Skinly's.
UCSF Eureka Research ships an update every 5 weeks, Skinly every 3 weeks. The most recent releases landed on October 14, 2026 and October 12, 2026 respectively.
| Parameter | UCSF Eureka Research | Skinly |
|---|---|---|
| Price | Free | Free |
| Rating | 3.1 (329 ratings) | 3.2 (10 ratings) — better |
| Positive reviews | 22.2% of reviews | 28.2% of reviews — better |
| Number of ratings | 329 — better | 10 |
| Update frequency | Every 5 weeks | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod, Apple Watch — better | iPhone, iPod |
| Requires iOS | 14.0 — better | 15 |
| Further details — not scored | ||
| Size | 61 MB | 192 MB |
| Age rating | 17+ | 4+ |
| Developer | University of California at San Francisco | Beiersdorf Shared Services GmbH |
Customer experience
UCSF Eureka Research
Skinly
Bugs and requests
UCSF Eureka Research
Reported bugs
4 issues- App crashes during data entry
- Login issues, unable to reset password
- Incompatible with certain devices (e.g., jailbroken, older devices)
- Unexpected behavior when trying to opt out or delete account
Requested features
4 requests- Improve stability and reliability
- Provide better instructions and guidance
- Add support for international users
- Improve battery optimization
Skinly
Not enough reviews yet to summarise bugs or requests.
In-app purchases
UCSF Eureka Research
No in-app purchases
Skinly
No in-app purchases
Questions
Is UCSF Eureka Research free?
Is Skinly free?
Which has better reviews, UCSF Eureka Research or Skinly?
Do UCSF Eureka Research or Skinly have ads?
Which is updated more often, UCSF Eureka Research or Skinly?
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