lock in

/ˈlɒkɪn/  informal phrase

  1. to focus completely on a task and remove all distractions.

  2. four apps built so that sense 1 actually happens.

  1. Lock shuts out whatever pulls you away
  2. Recall the cards you earn it back with
  3. Pod your subject, spoken
  4. Hub everything you are studying, in one place

Not out yet. Built for one person, on purpose.