Updated 3 November 2026 by Spencer Lay, who makes FocusFlow.
Opal
Opal blocks apps and websites during focus sessions and on recurring schedules, with a strict mode that is hard to end early. Its stronger features are in a paid tier. It suits people who work in fixed hours.
FocusFlow
You pick the apps that get locked. You add the tasks you need to do. When you finish a task, you take a photo of it, an AI model checks the photo against the task, and you earn 15 minutes by default. The minutes count down only while you are in the locked apps, and when they run out the apps lock again, even if FocusFlow is closed. Once every task for the day is done, the apps stay open for the rest of the day.
It is built around a student's day: blockouts for class and bedtime, daily caps on each app, and tasks from your calendar, Reminders or Canvas.
Which to pick
- Your evenings vanish to your phone whatever the clock says: FocusFlow.
- You want apps off between set hours: Opal.
- Your parents are setting it up for you: FocusFlow's family plan lets them give tasks and check them.
| Opal | FocusFlow | |
|---|---|---|
| Unlocks when | A session or schedule ends | You finish a task |
| Proof of work | No | A photo, checked by AI |
| Built for | Focus sessions and set hours | Homework and deadlines |
| Cost | Free tier, paid upgrade | Free to download; family plan $9.99 a month |