Respondus Monitor
8.1#1 in online proctoring softwareFrom $15 a yearFree planAndroidiOSWebExtension
VisitNo prices published.
Monitor is for higher-education institutions and instructors running online assessments who need webcam recordings and flagged events for review. Students need a compatible device and an institution with the required LockDown Browser license.
You want what its maker publishes above — check its page for the details.