About this app
The WHIRLwell app is for those interested in participating in survey-based research studies and sharing their experiences with researchers. The app gives eligible participants access to short surveys and study materials for the University of Michigan’s WHIRLab and its collaborators. Through the app, users will be able to enroll and withdraw from studies, access surveys, and receive notifications to remind them when it is time for the next survey.
Latest release
What’s New
Behind the scenes tweaks, bugfices, and styling updates
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Aug 6, 2026 · 8:25 AM Free
Screenshots
