Understudy

A mirror exercise that hands movement back, finger by finger. A seated routine on your own table, measured each day.

Loading Understudy. The first visit downloads the app for offline use.

  • Hands only. Every button works with one hand, either side.
  • Everything stays on your headset. No account.
  • For a weak hand after stroke, a missing hand, stiff morning hands, or hands that work all day.
See how it works and what has been verified →
Exercise prototype. Hand measurements are estimates. Use alongside your care team's advice.
Actual app: a mirror hand above a felt cloth, with a separate own-movement setting for each finger.
Watch → Rehearse → PerformEach finger blends the Lead’s reflection with its own tracked movement. Repeated measurements guide the assistance setting.
Actual app in Meta IWER. Hands and history are simulated.