Source
Not connected
Research Study
AppetiteCheck
Welcome to Your Appetite Study
Thank you for participating in our research on appetite and vagus nerve stimulation. This app will guide you through quick daily check-ins to track how you feel before and after each session.
Quick daily check-ins
Track hunger & fullness
Wearable heart-rate capture
Simple tap-based scales
Get Started
Sign in to continue your study participation, or create an account if you're new.
Welcome Back!
Ready to log today's session. Let's get started.
Heart Rate Monitor
Connection help
- Wear the ring on your finger (not on the charger).
- Close the Colmi, QRing, or other companion app; a wearable usually accepts only one live connection.
- Select the wearable in AppetiteCheck and wait up to 30 seconds for the first heart-rate reading.
Use Chrome or Edge for the web backup; Bluetooth wearable access is not available in every browser.
1
Connect your wearable
For the study ring, wear it snugly and choose Colmi below.
Other connection options
Other devices work when they broadcast the standard BLE Heart Rate Service. Some sports watches require a "Broadcast Heart Rate" mode.
No heart-rate wearable connected yet.
Heart Rate
— bpm
Readings
0
Battery
—
Session recording
2
Save study snapshots
Tap once before your session, then again after. You can disconnect between them — the chart keeps your recording.
Before snapshot: — | After snapshot: —
Connection log (technical)
Connection Log
Waiting for device...
Connect a wearable device to see heart rate data here.
Supported devices and research limits
- Recommended: the study-provided Colmi ring.
- Other wearables work only when they expose the standard BLE Heart Rate Service.
- Apple Watch, Oura, Fitbit, and Galaxy Watch proprietary integrations are not included.
- Keep AppetiteCheck open during capture; this is not continuous background monitoring.
- This research app does not control stimulation, diagnose conditions, or provide emergency monitoring.