An Android app that gives reminders for the 20-20-20 rule to prevent computer eye strain. For information about the 20-20-20 rule, look here. (You can also easily Google it if you'd prefer.)
- 20 minutes: the (default) interval between eye-rest reminders
- 20 seconds: the (default) length of time to rest eyes
- 20 feet: distance of an object to look at to rest eyes
20-20-20. 20^3. cubic20!