# Beiwe2

> Open-source research platform for collecting study data via sensors and surveys. (iPhone/iPad app by Onnela Lab LLC.)

- Source: https://appshunter.io/ios/app/beiwe2/id1312962738 (this page in markdown: same URL + `.md`)
- Developer: [Onnela Lab LLC](https://appshunter.io/developer/1120224929)
- Category: Education, Medical
- Price: Free
- Age rating: 4+
- Requires: iOS 13.0 · 43 MB
- Languages: English, German, Italian, Chinese, Chinese
- Released: 2017-12-21
- Data updated: 2026-07-07
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/beiwe2/id1312962738/reviews.md

## What is Beiwe2?

The Beiwe App is part of the Beiwe Research Platform.

Beiwe is an open-source research platform for subjects enrolled in clinical and non-clinical studies. It provides research-quality sensor, participant usage, and survey data in reproducible studies and is intended for research purposes. Only participants who have been invited to join a study, and have been provided with a participant ID and registration password from a Beiwe server, can use this app. The Beiwe Platform is a project of the Onnela Lab at Harvard University, and development is supported by funding from the U.S. National Institutes of Health.

Usage of this Beiwe app is open to any Beiwe server by providing a URL at participant registration.

Only data configured for collection on an enrolled study are recorded by the app. A small amount of additional metadata, such as whether the user has granted the app permission to access the sensors enabled by the study, are collected in order to assist administrators with participant management and study compliance. All data recorded by the app is encrypted, and once saved it cannot be decrypted except by the server hosting the study.

Please Note: use of background GPS will cause some battery drain. Careful configuration and testing of this load on devices ranging from the iPhone 8/X generation (2016) up to current models has been reliably measured at only 6-8% over 12 hours for new batteries, with a worst case of 14% on an older model with a heavily degraded battery. Further battery drain will vary based sensor configuration of the study you enroll in, and the active time you spend in the app.

(This app may indicate that it connects to Apple's Health app or uses Apple's HealthKit framework. This is due to the use of Apple's ResearchKit framework, which has HealthKit as a dependency. The app does not incorporate Health data.)

## Key features

- Research-quality sensor data collection
- Participant usage tracking
- Survey data collection
- Encrypted data storage
- Reproducible studies
- Participant management

## Recent user reviews (6 of 6)

All indexed reviews: https://appshunter.io/ios/app/beiwe2/id1312962738/reviews.md

### 5/5 — A+

*2024-12-13, version 2.5.0*

Used with a study and worked great. Old login issues seem to have been solved

### 1/5 — Terrible app

*2022-12-03, version 2.2.1*

I’ve been involved in a study but I haven’t been able to log in for months. With a previous update, the app suddenly told me I had the wrong password when I absolutely know it was correct. I copied and pasted it from a password keeper and the app still said it was wrong. Now when I try to log in, the app just shuts down and kicks me out. What is going on with this? I can’t participate in the study anymore.

### 1/5 — Too Many Issues with Log In

*2022-11-29, version 2.2.1*

After a recent update, my password would no longer work. Like others, I was certain I was entering the correct password. Now, the app quits when I try to enter any password. I am disappointed because the study that I was participating in is very important, but this app has too many bugs to make use feasible.

### 1/5 — Can’t contact study staff

*2022-10-02, version 2.1.2*

I’m supposed to contact study staff to reset my forgotten password, but there’s no contact info provided and nothing in my email that includes the word “Beiwe” or “Beiwe2.”

### 1/5 — Password

*2022-09-25, version 2.1.1*

My password won’t work after the recent update!

### 1/5 — Update

*2022-09-25, version 2.1.1*

Can’t log in after update

## Frequently asked questions about Beiwe2

### What is Beiwe2 used for?

Beiwe2 is used by participants enrolled in clinical and non-clinical studies to collect research-quality sensor, usage, and survey data. It is part of the Beiwe Research Platform, designed for reproducible studies.

### How do I get access to Beiwe2?

Access to Beiwe2 is strictly limited to participants invited to a study. You will need a participant ID and registration password provided by a Beiwe server to use the app.

### Does Beiwe2 collect sensitive health data?

While Beiwe2 uses Apple's ResearchKit framework, which has HealthKit as a dependency, it does not incorporate or collect data from Apple's Health app. It only records data configured for collection on your enrolled study.

### How does Beiwe2 affect battery life?

Background GPS usage can cause battery drain. Testing shows 6-8% drain over 12 hours for new batteries on recent iPhone models, with a worst case of 14% on older devices. Actual drain varies by study sensor configuration and app usage time.

### Is my data safe with Beiwe2?

Yes, all data recorded by Beiwe2 is encrypted. Once saved, the data cannot be decrypted except by the server hosting the study, ensuring participant privacy and data security.

### Can I use Beiwe2 offline?

The app is designed to collect data for studies. While specific offline functionality is not detailed, data collection and synchronization typically require an active connection to the Beiwe server.

### What devices are compatible with Beiwe2?

Beiwe2 is available for iPhone and iPod devices. It is designed to work on a range of models from the iPhone 8/X generation up to current models.

### How often is Beiwe2 updated?

The latest version of Beiwe2 is 2.5.6, last updated on November 8, 2025. Updates are provided by the Onnela Lab LLC to ensure continued functionality and research support.

## Version history (last 5 releases)

### 2.5.7 — 2026-07-02

This update squishes a few bugs:
- The app no longer doesn't not crash when processing double negatives in complex survey logic. Other uncertain logic is now definitely very, very, Very certain, and must take a weekly test to prove it stays that way.
- While the old cancel survey and end task animations were a bit longwinded... the bubbly iOS 26 one was so positively glacial that its slow-motion momentum could cancel the whole app. It has been let go.
- Sensor data could theoretically drift slightly on the ocean of time. The Relevant Protocols have been ... modified...

### 2.5.6 — 2025-11-08

2.5.6: This update fixes an obscure crash when displaying a survey, and improves some debugging info so we can diagnose issues better.
2.5.5: This update includes Improved Chinese localizations, and contains a possible fix for an issue with error reporting.

### 2.5.5 — 2025-10-24

2.5.5: This update includes Improved Chinese localizations, and contains a possible fix for an issue with error reporting.

### 2.5.4 — 2025-08-20

2.5,4: Wow. ... sooo it looks like the call-in-to-your-study feature broke due to an iOS update? ... aaaand it was not a recent one? ... ok i fixed it it is fixed now fixed all fixed (fixed)...
2.5.3: This bugfix update to the Beiwe iOS app provides a few accessibility improvements, and a change to the error reporting configuration.

### 2.5.3 — 2025-08-13

This bugfix update to the Beiwe iOS app provides a few accessibility improvements, and a change to the error reporting configuration.

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## More apps by Onnela Lab LLC

- [Beiwe](https://appshunter.io/ios/app/beiwe/id1120224930)

All apps by Onnela Lab LLC: https://appshunter.io/developer/1120224929

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-07.*