UCSF Eureka Research vs GaussNut
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.
GaussNut
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LLM-Powered Nutrition Estimation for 100+ nutriments. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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Verdict
The clearest difference is in-app purchases: UCSF Eureka Research at none against GaussNut's 1. GaussNut's advantage is update cadence (every 9 days vs every 5 weeks). On price, ads, device support and iOS requirement 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. GaussNut sells 1 in-app purchase, starting at $9.99 per month. UCSF Eureka Research asks for nothing beyond the download.
UCSF Eureka Research ships an update every 5 weeks, GaussNut every 9 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.
| Parameter | UCSF Eureka Research | GaussNut |
|---|---|---|
| Price | Free | Free |
| Rating | 3.1 (330 ratings) — better | — |
| Positive reviews | 22.2% of reviews | — |
| Number of ratings | 330 — better | — |
| Update frequency | Every 5 weeks | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPod, Apple Watch — better | iPhone, iPod |
| Requires iOS | 14.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 61 MB | 29 MB |
| Age rating | 17+ | 4+ |
| Developer | University of California at San Francisco | George Balch |
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
GaussNut
Not enough reviews yet to summarise bugs or requests.
In-app purchases
UCSF Eureka Research
No in-app purchases
GaussNut
- Callos Premium$9.991 Month
Questions
Is UCSF Eureka Research free?
Is GaussNut free?
Do UCSF Eureka Research or GaussNut have ads?
Which is updated more often, UCSF Eureka Research or GaussNut?
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