I guess you absolutely need a computing power beyond the ability of a wrist held device to distinguish your strong heartbeat between rest and walking/running condition, so it would have, if screenless, to be compatible with iOS or Android.
Maybe an investigation of actual sampled data of people with anxiety disorder would indicate that it can be done without AI and fit all in a screenless device, but I'm a bit doubtful.
Maybe an investigation of actual sampled data of people with anxiety disorder would indicate that it can be done without AI and fit all in a screenless device, but I'm a bit doubtful.