Focus App Guide: 7 That Actually Help You Concentrate
Downloading an app to stop looking at your phone is a little funny. It also works, if you pick the right kind.
The best focus app is the one that puts a wall, or at least a speed bump, between you and whatever keeps pulling you away. For most people that’s the phone itself. A timer helps you structure work. A blocker or delay app is what stops you from opening Instagram 40 times during it.
I’ve sorted the options by how they work rather than by star rating, because the category matters more than the brand. Then there’s a short plan for picking one and actually keeping it.
What Is a Focus App?
A focus app is any app that helps you stay on one task for longer. That sounds broad because it is. The label covers Pomodoro timers, website blockers, apps that lock your phone for a set time, and tools that make your screen less fun to look at.
They split into two camps. Some help you plan attention (timers, task lists). Others defend it (blockers, delays, grayscale). If you already sit down to work but keep drifting to your phone, you need the second camp. A timer won’t stop a habit that kicks in mid-sentence.
There’s a reason the phone deserves special treatment. In the well-known “brain drain” experiments, people did worse on working memory and reasoning tests when their own phone was on the desk, even face down and silent, compared with leaving it in another room. The effect was biggest for people who said they depended on their phones most. More on that in our piece on phones and attention span.
Do Focus Apps Work? What Studies Say
The research is surprisingly consistent on one point: information alone barely moves behavior. A 2019 CHI paper reviewed 42 digital wellbeing apps and ran a three-week field study. People liked the dashboards, then mostly carried on as before. They said the apps were too easy to dismiss.
Friction is a different story. In a 2023 PNAS study of the one sec app, 280 people had to wait a moment and confirm before opening apps they had chosen to cut back on. About 36% of the time they backed out. After six weeks, opens of those apps were down 57%.
The strongest result came from going further. In a 2025 trial in PNAS Nexus, 467 adults used the Freedom app to block all mobile internet on their phones for two weeks while keeping calls and texts. Sustained attention improved, and so did mental health and well-being. Even a tiny interruption costs something: a 2015 experiment found that just getting a phone notification, without answering it, hurt performance on an attention task.
The short version: apps that count minutes rarely help. Apps that slow you down, block things, or make the phone duller are the ones with real numbers behind them.
7 Focus Apps Worth Trying, by Type
These are real, widely used apps. I’ve left out prices because they change constantly; most have a free tier or trial.
Apple Focus modes (built in, free)
Already on your iPhone under Settings. A Focus mode silences notifications from everyone except the people and apps you allow, and can hide Home Screen pages. Good first step, but it’s easy to swipe off, so treat it as the floor, not the whole plan.
Forest (timer with a reward)
You plant a virtual tree when you start a session, and leaving the app to check something else kills it. It’s silly and it works on the part of your brain that hates losing streaks. Best for study sessions and people who respond to small games.
A Pomodoro timer (any of them)
Work 25 minutes, break 5, repeat. Pick whichever timer you like; the method is what matters. It structures your session but doesn’t defend it, so pair it with something from the list below.
one sec (delay app)
Makes you pause before a chosen app opens and asks if you really want it. This is the app from the 57% study above. It’s gentle enough to leave on all the time, which is the whole trick.
Freedom or Opal (blockers)
Both let you block apps and sites on a schedule or for a session. Freedom also syncs across computers, which matters if your distraction is a browser tab. Opal is a popular pick on iPhone. We compare it in detail in Go Gray vs. Opal.
Brick (physical lock)
A small device you tap your phone against to lock chosen apps, and you need to tap it again to unlock. If you leave it at home, you can’t cheat. Great for people who disable every software blocker within a day. You know who you are.
Go Gray (grayscale and nudges)
Ours, so take this with the right amount of salt. Go Gray puts iPhone’s grayscale filter one tap away in Control Center, gives you 30-minute color breaks that switch back to gray by themselves, and nudges you after 30 minutes and an hour on the apps you pick. Go Gray Pro adds app blocks past a daily limit and bedtime and work routines.
How to Choose a Focus App That Fits You
Start with the question “what actually breaks my focus?” Be honest. The answer changes which tool you need.
| Your problem | Try this type |
|---|---|
| I never really start | Pomodoro timer or Forest |
| I open social apps on autopilot | Delay app like one sec |
| I lose whole evenings to one app | Blocker with a daily limit |
| I disable every blocker | Physical lock like Brick |
| My phone is just too fun | Grayscale |
| Notifications keep pinging | Apple Focus modes |
Most people need two: one tool that structures work and one that guards it. Stacking five apps is a great way to spend an afternoon configuring apps instead of working. Ask me how I know.
Does the Pomodoro Technique Actually Help?
There’s less research on Pomodoro than you’d guess from its popularity. One of the few real tests came out in 2023. Researchers split 87 university students into three groups for a study session: fixed 24-minute blocks with 6-minute breaks, fixed 12-minute blocks with 3-minute breaks, or breaks whenever they felt like it.
The students who chose their own breaks studied in longer stretches and took longer breaks. They also reported more fatigue and distraction and less concentration. Task completion was about the same across groups, so the fixed-break students got there in less time. Not a miracle. Still a decent case for letting a timer make the call.
Why Grayscale Works as a Focus Tool
Color is a big part of what makes apps feel rewarding. Red badges, bright thumbnails, endless saturated video. Take the color away and the phone gets boring, which is the point.
In a 2023 study of college students, switching to grayscale cut daily screen time by about 38 minutes. A separate 2024 study found about 20 minutes less per day after a week, with the biggest drop on social media. It won’t write your essay for you. It does make the phone a worse place to hide from it. Our grayscale mode guide shows how to set it up on any phone.
A 7-Day Plan to Test Your Focus App
- Day 1Check your Screen Time and write down your top three distracting apps and your daily pickups.
- Day 2Install one guard tool (delay, blocker or grayscale) and point it only at those three apps.
- Day 3Add a timer for your main work block. Phone goes in another room for that block, per the brain drain research.
- Day 4–6Leave the settings alone. Annoyance is the tool doing its job.
- Day 7Compare your numbers with Day 1. Keep what you didn’t switch off; drop what you did.
If you want more habits to go with the app, our guides on how to stay focused and deep work pick up where this leaves off.
Where Go Gray Fits
We built Go Gray because iPhone’s grayscale setting is buried deep in Accessibility. Go Gray makes it one tap from Control Center, the Action button or Back Tap. When you need color for a photo or a map, take a 30-minute color break and it goes back to gray by itself.
Pick the apps that eat your time and Go Gray nudges you after 30 minutes and again after an hour. With Go Gray Pro you also get app-by-app screen time, app blocks past a daily limit, and work and bedtime routines that pause apps on a schedule. Your screen time data stays on your iPhone. It’s iPhone only, and you can get Go Gray on the App Store or read more on the Go Gray app page.
Frequently Asked Questions
What is the best focus app?
The best focus app is the one that blocks or slows down the thing that actually distracts you. If your phone is the problem, a blocker or delay app usually beats a timer. In a 2023 PNAS study, a delay app cut opens of the chosen apps by 57% after six weeks.
Do focus apps actually work?
Focus apps that add friction tend to work, while apps that only track your time mostly do not change behavior. A 2025 trial found that blocking mobile internet for two weeks improved sustained attention, and a CHI 2019 review found plain trackers were too easy to ignore.
Is there a free focus app on iPhone?
Yes. iPhone has Focus modes built in under Settings, which silence notifications and can hide Home Screen pages. Screen Time can set app limits, and the grayscale color filter in Accessibility makes the whole phone less appealing for free.
Does the Pomodoro technique help you focus?
There is some evidence it does. In a 2023 study of 87 university students, those who took fixed breaks every 24 minutes reported more concentration and less fatigue than students who chose their own breaks, and they got the same work done in less time.
References
- Ward, A. F., Duke, K., Gneezy, A., & Bos, M. W. (2017). Brain Drain: The mere presence of one’s own smartphone reduces available cognitive capacity. Journal of the Association for Consumer Research, 2(2), 140–154. doi.org/10.1086/691462
- Grüning, D. J., Riedel, F., & Lorenz-Spreen, P. (2023). Directing smartphone use through the self-nudge app one sec. PNAS, 120(8), e2213114120. pmc.ncbi.nlm.nih.gov/articles/PMC9974409
- Castelo, N., Kushlev, K., Ward, A. F., Esterman, M., & Reiner, P. B. (2025). Blocking mobile internet on smartphones improves sustained attention, mental health, and subjective well-being. PNAS Nexus, 4(2), pgaf017. pubmed.ncbi.nlm.nih.gov/39967678
- Biwer, F., Wiradhany, W., oude Egbrink, M. G. A., & de Bruin, A. B. H. (2023). Understanding effort regulation: Comparing ‘Pomodoro’ breaks and self-regulated breaks. British Journal of Educational Psychology, 93(S2), 353–367. pubmed.ncbi.nlm.nih.gov/36859717
- Stothart, C., Mitchum, A., & Yehnert, C. (2015). The attentional cost of receiving a cell phone notification. Journal of Experimental Psychology: Human Perception and Performance, 41(4), 893–897. doi.org/10.1037/xhp0000100
- Monge Roffarello, A., & De Russis, L. (2019). The Race Towards Digital Wellbeing: Issues and Opportunities. CHI ’19 Proceedings. doi.org/10.1145/3290605.3300616
- Holte, A. J., & Ferraro, F. R. (2023). True colors: Grayscale setting reduces screen time in college students. The Social Science Journal, 60(2), 274–290. doi.org/10.1080/03623319.2020.1737461
- Dekker, C. A., & Baumgartner, S. E. (2024). Is life brighter when your phone is not? The efficacy of a grayscale smartphone intervention addressing digital well-being. Mobile Media & Communication, 12(3), 688–708. pure.uva.nl (PDF)
Make your phone boring
Go Gray for iPhone puts grayscale one tap away, with 30-minute color breaks and a nudge when you scroll too long.
