Collect data from phones and wearables

What is CARP?

CARP (Copenhagen Research Platform) is a set of open-source tools for collecting data from smartphones, wearables and the people who carry them. Researchers use it for health and behavior studies. Developers use it to add sensing to any Flutter app.

• Sensors: location, steps, activity, sleep, screen, battery, Bluetooth and more
• Wearables and health apps: Health Connect, Apple Health, Apple Watch, Polar, Movesense
• From people: surveys, cognitive tests, voice, video and photos

See every measure in the sampling packages table.

Why CARP?

Open source

MIT license. Read the code, change it, run it yourself.

Private by design

Participants can join anonymously with a code, and data can be anonymized before it leaves the phone. See privacy.

Integrations are ready

Phone sensors, Health Connect, Apple Health, Apple Watch, Polar, Movesense, Movisens and eSense. See available packages.

Add anything

If a phone sensor or wearable has an SDK, you can add it as a sampling package.

Pick your path

Use the CARP Studies app

Already on the App Store and Google Play. You write the study files, participants install the app. No app code, nothing to deploy. Configure your study, then run it.

Build your own app

Your own screens and flow, written in Flutter with CARP Mobile Sensing. Build your own app.

Components

Mobile SensingCollect data from onboard phone sensors, wearable devices, and users

HealthRead and write health data from/to Apple Health and Google Health Connect

Apple Watch SensingCollect passive sensor data from an Apple Watch in a CARP Mobile Sensing study

CARP Debug ToolkitAn in-app debugging toolkit for CARP (and any) Flutter apps

How CARP fits togetherHow the parts of CARP fit together

API ReferenceGenerated reference for every CARP Dart package

Community and help

DiscordAsk questions, share your study, talk to the team.

GitHubSource code, issues and pull requests.

Emailsupport@carp.dk

carp.dkAbout CARP, studies and publications.