# UCSF Eureka Research vs Apple Research

The clearest difference is rating: Apple Research at 4.2 against UCSF Eureka Research's 3.1. Apple Research also leads on review sentiment (37% vs 22%) and ratings volume (1.6K vs 330). UCSF Eureka Research's advantage is update cadence (every 5 weeks vs every 2 months) and iOS requirement (14.0 vs 18.0). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Apple Research holds the better App Store score, 4.2 against 3.1. Both are backed by a comparable volume of ratings — 330 and 1.6K respectively. Written reviews point the same way: 22% of UCSF Eureka Research's written reviews are positive against 37% of Apple Research's.

UCSF Eureka Research ships an update every 5 weeks, Apple Research every 2 months. The most recent releases landed on November 2, 2026 and November 11, 2026 respectively.

## The numbers

| Metric | UCSF Eureka Research | Apple Research |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.1 (330 ratings)](https://appshunter.io/ios/app/ucsf-eureka-research/id1235219119/reviews) | **[4.2 (1.6K ratings)](https://appshunter.io/ios/app/apple-research/id1463884356/reviews)** |
| Number of ratings | 330 | **1.6K** |
| Positive reviews | 22.2% of reviews | **36.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | Free | Free |
| Size | 61 MB | 105 MB |
| Requires iOS | **14.0** | 18.0 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, Apple Watch |
| Age rating | 17+ | 4+ |
| Developer | [University of California at San Francisco](https://appshunter.io/developer/446489325) | [Apple](https://appshunter.io/developer/284417353) |

## What reviewers say

### UCSF Eureka Research

[App page](https://appshunter.io/ios/app/ucsf-eureka-research/id1235219119)

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.

**Highlights:** Join medical research studies, Contribute to health problem solutions, Participate via smartphone, Support top research universities, Track impact on health causes

**Features:** Apple Watch app, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Smooth performance
- 👍 Easy to use
- 💡 Allows participation in multiple studies
- 👍 Reassuring to be run by academic institution

**What reviewers complain about**

- 🐛 Crashes frequently
- 🔋 High battery consumption
- 🔒 Concerns about data security and privacy
- 👎 Buggy and unstable
- 👎 Unreliable login and password reset functionality

**Reported bugs**

- 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**

- Improve stability and reliability
- Provide better instructions and guidance
- Add support for international users
- Improve battery optimization


### Apple Research

[App page](https://appshunter.io/ios/app/apple-research/id1463884356)

Contribute to groundbreaking health research by participating in studies using your Apple Watch and iPhone. Gain insights into your health and help advance medical science and Apple's health technologies. Choose which data to share and manage your contributions.

**Highlights:** Join health research studies, Learn about research partners and goals, Understand study expectations, Enroll by providing consent, Choose and manage data sharing, Perform study-related tasks, Access Apple Health data

**Features:** Apple Watch app

**In-app purchases:** none

**What reviewers like**

- 👍 Frictionless participation
- 🚀 Excellent data collector
- 💡 Great concept
- 🌟 Behind you 100%
- 👍 Love collaborative research

**What reviewers complain about**

- 🔒 Privacy concerns
- 🐛 Buggy app
- 🔋 High battery drain
- 🚫 Limited to Apple devices
- 💰 Lack of compensation

**Reported bugs**

- Transferring studies to new device fails
- Hearing test issues
- Menstrual cycle survey crashes
- Demographic info not editable
- Quiet place detection not working

**Requested features**

- Save progress in surveys
- Ability to edit/review submitted data
- Incentives for participation
- Expand to non-Apple devices
- More diverse study options


## Frequently asked questions

### Is UCSF Eureka Research free?

UCSF Eureka Research is free to download, with no in-app purchases.

### Is Apple Research free?

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

### Which has better reviews, UCSF Eureka Research or Apple Research?

Apple Research is rated higher. UCSF Eureka Research averages 3.1 out of 5 from 330 ratings, while Apple Research averages 4.2 from 1.6K ratings.

### Do UCSF Eureka Research or Apple Research have ads?

Neither UCSF Eureka Research nor Apple Research shows ads.

### Which is updated more often, UCSF Eureka Research or Apple Research?

UCSF Eureka Research ships an update every 5 weeks, and Apple Research every 2 months. Most recently, UCSF Eureka Research was updated on November 2, 2026 and Apple Research on November 11, 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.*