# UCSF Eureka Research vs Macro Trainer

The clearest difference is update cadence: Macro Trainer at weekly against UCSF Eureka Research's every 5 weeks. On price, ads, in-app purchases and device support there is nothing between them.

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

UCSF Eureka Research ships an update every 5 weeks, Macro Trainer weekly. The most recent releases landed on October 14, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | UCSF Eureka Research | Macro Trainer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.1 (329 ratings)](https://appshunter.io/ios/app/ucsf-eureka-research/id1235219119/reviews)** | — |
| Number of ratings | **329** | — |
| Positive reviews | 22.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Weekly** |
| Monetization | Free | — |
| Size | 61 MB | 738 MB |
| Requires iOS | **14.0** | 15.5 |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [University of California at San Francisco](https://appshunter.io/developer/446489325) | [Little Theta LLC](https://appshunter.io/developer/1895438187) |

## 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


### Macro Trainer

[App page](https://appshunter.io/ios/app/macro-trainer/id6763687102)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is UCSF Eureka Research free?

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

### Is Macro Trainer free?

Macro Trainer is free to download, with no in-app purchases.

### Do UCSF Eureka Research or Macro Trainer have ads?

Neither UCSF Eureka Research nor Macro Trainer shows ads.

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

UCSF Eureka Research ships an update every 5 weeks, and Macro Trainer weekly. Most recently, UCSF Eureka Research was updated on October 14, 2026 and Macro Trainer on October 8, 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.*