---
title: "3E Smartphone Substudy — App Overview"
url: https://marlvel.ai/intel-report/health-fitness/3e-smartphone-substudy
category: Health & Fitness
developer: Avicenna Research Inc.
platforms: ios, android
rating: N/A (0 ratings)
pricing: free
report_level: overview
generated: 2026-05-05
last_verified: "2026-05-05T20:25:09.009Z"
---

<!-- SECTION: Key Insight -->
> **Key Insight:** This is a specialized research data collection tool designed to gather longitudinal health and behavioral metrics from study participants.

<!-- SECTION: Quick Facts -->
| Metric | Value |
|--------|-------|
| Category | Health & Fitness |
| Rating | N/A ★ (0) |
| Pricing | free |
| Platforms | iOS, Android |
| Latest Version (iOS) | 1047 |
| Latest Version (Android) | 1030 |
| Developer | Avicenna Research Inc. |

<!-- SECTION: Summary -->
## What is 3E Smartphone Substudy?

The 3E Smartphone Substudy app is a research tool developed by Avicenna Research Inc. to collect health behavior data through user surveys and passive smartphone sensor tracking. Participants contribute to longitudinal health studies by providing movement and usage data over nine-day periods, recurring 1-2 times per year.

<!-- SECTION: Key Features -->
## Key Features

- **Daily Health Surveys**: Users complete five-minute daily surveys for nine consecutive days regarding sleep, physical activity, and health behaviors.
- **Passive Sensor Tracking**: The app utilizes built-in GPS, accelerometer, and gyroscope sensors to monitor movement, steps, and distance traveled.
- **Usage Analytics**: The app collects general screen time and app usage duration data without accessing specific content within those applications.

<!-- SECTION: Target Audience -->
## Who is it for?

Individuals participating in clinical or health-related research studies conducted by Avicenna Research Inc.

<!-- SECTION: Links -->
## Links

- [App Store](https://apps.apple.com/us/app/3e-smartphone-substudy/id6465963006?uo=4)
- [Google Play](https://play.google.com/store/apps/details?id=com.ethica.fordham3E&hl=en&gl=us)
- [Full Intelligence Report](https://marlvel.ai/intel-report/health-fitness/3e-smartphone-substudy)

---
*This is an overview report. Sentiment analysis, competitive landscape, and SWOT analysis are available in the [full intelligence report](https://marlvel.ai/intel-report/health-fitness/3e-smartphone-substudy).*
*Generated by [Marlvel.ai](https://marlvel.ai) — Independent app intelligence.*