Deep work on demand.
Pick the apps. Pick how long. SETL Sessions blocks your distractions until the time is up.
What is a focus app blocker?
A focus app blocker blocks distracting apps for a set length of time, so you can do one thing properly.
SETL Sessions brings the same blocking as SETL Sleep into your day. Choose the apps, choose how long, and start.
The block ends by itself when the session is over. If you really need an app sooner, you press and hold to open it. A deliberate choice, not a reflex tap.
Why it matters: attention researcher Gloria Mark found we now hold attention on one screen for around 47 seconds before switching.1 Read what distraction really costs.
What people use SETL Sessions for
Deep work
Protect the hours where the real work happens.
Revision and exams
Put social apps away until the chapter is done.
Fewer choices to fight
Removing the option can be easier than resisting it. App blockers and ADHD.
The gym
Rest between sets, not between reels.
Dates and quality time
Be in the room you are actually in.
Meetings
Stay present while the call is on.
What SETL gave back in beta
About 3 hours a day, and 1 more at night.
Less screen time a day. About 3 hours by day and 1 hour at night.
Handed back every week.
Every month. That is more than 5 full days.
Across a lifetime of daily use.
Average daily reduction in screen time reported by SETL beta testers in 2026, against usual screen time of 5 to 7 hours a day. Week and month figures multiply that average out. The lifetime figure assumes daily use from age 15 to 87. Individual results vary.
Focus guides
Does it really take 23 minutes to refocus?
The '23 minutes to refocus' figure is everywhere.
FocusApp blocker for ADHD: does blocking apps actually help?
Can an app blocker for ADHD help? What research says about ADHD, phone use and sleep, why removing the option beats willpower, and how to set one up.
PsychologyHow to stop doomscrolling, especially at night
Doomscrolling is endlessly scrolling through bad news.
PsychologyWhy apps are addictive: the design tricks that keep you hooked
Why apps are addictive comes down to design: infinite scroll, variable rewards, notifications, autoplay, streaks and likes.
SETL Sessions FAQs
What is SETL Sessions?
SETL Sessions is a focus app blocker for iPhone. Pick the apps to block and how long for, and SETL blocks them until the session ends.
Can I end a SETL Session early?
Yes. Press and hold to open your apps sooner. It is deliberate on purpose, so a reflex tap cannot undo your focus.
Is SETL Sessions good for studying?
Yes. Start a session before revision, block social and video apps, and they unlock by themselves when your study block is done.
Can an app blocker help with ADHD focus?
Many people find removing the option easier than resisting it. SETL is not a treatment for ADHD. Read more.
Is SETL Sessions included in SETL?
Yes. SETL Sessions, SETL Sleep and SETL Plans are included in every plan, from $3.33 a month billed yearly.
How much screen time does SETL save?
In SETL's 2026 beta, testers reported an average of 4 hours 3 minutes less screen time a day: about 3 hours in the day and 1 hour at night.
Your phone can go to sleep first.
Join the SETL waitlist. Get up to 7 nights free when we launch.