Contents
Why a timer helps at the switch: what the research on attention residue testedFour transition timers compared: what happens when one task endsBe Focused: separate timer settings for every taskForest: a breathing break that sits between sessionsRoutinery: a step-by-step reset you write onceSession: a closing question at the end of each blockHow to choose: pick by what goes wrong at your switchesGetting started: a five-minute switch routine to try this weekFrequently asked questions: transition timer appsReferences: sources cited aboveLast updated: 2026-10-13
Quick answer: For a short routine between tasks, Routinery times each step of a reset you write and reads the next step aloud. Session asks what you learned when a focus block ends. Forest offers guided breathing between sessions in Mindful Space, and Be Focused lets each task carry its own work and break lengths.
You send the invoice, open the design file, and spend the first stretch of it wondering whether you attached the right PDF. That pull has a name. Attention residue is what happens when you switch tasks but part of your attention stays behind on the old one, and the new task never gets your full focus.
A timer puts a start and an end on the switch and gives you something specific to do in between. All four apps below are timers at heart. What they do when one task ends is where they part ways. We make Routinery. It sits in the table with the others, sorted alphabetically, and its limits are spelled out in its own section.
Why a timer helps at the switch: what the research on attention residue tested
The studies below back one fix. Before you switch, write a brief plan for where you'll pick the old task back up.
Sophie Leroy named the effect in a 2009 paper in Organizational Behavior and Human Decision Processes. Across two lab experiments, people struggled to move their attention off a task they hadn't finished, and their next task suffered for it. That was lab work, and it is where the term comes from.
Leroy and Theresa Glomb followed up in 2018 with what they called a ready-to-resume plan. Participants who expected time pressure when they returned to an interrupted task carried more residue into the interruption. A short pause to reflect on the unfinished task and plan the return reduced that residue, and their work on the interrupting task held up. Their participants were interrupted by someone else. This article is about switches you choose and borrows the same idea.
A 2025 diary study of 50 employees took the question into real workplaces. Each person kept a diary 4 times, for 200 entries in total. People reported more attention residue and more exhaustion on days with more work intrusions, and writing ready-to-resume plans reduced the residue.
No app was tested in any of these studies, and the timer's job is just to hold open the minute you'd write that plan in.
Four transition timers compared: what happens when one task ends
Prices and plans below are what each official pricing page or App Store listing showed on 2026-10-11. Apps are in alphabetical order.
| App | Best for | What it does between tasks | Platforms | Free option | Paid | Source |
|---|---|---|---|---|---|---|
| Be Focused | Giving each task its own work and break lengths | Short and long breaks with lengths you set, timer settings per task, optional auto start of the next interval | iOS, iPadOS, watchOS, macOS | Free to download and keep using. Sync, tags, CSV export and ad removal are Pro | $2.99/month, $19.99/year (7-day trial) or $39.99 lifetime | App Store listing |
| Forest | Stepping away from the phone between sessions | Mindful Space offers guided breathing and soundscapes between focus sessions | Android, iOS, iPadOS, visionOS, browser extension | Focus timer, Deep Focus and Mindful Space with 1 soundscape | Plus price not published, varies by region | Forest plans |
| Routinery | Running the same short reset at every switch | Each step of a routine runs on its own timer while a voice reads it aloud and announces the next one | iOS, iPadOS, macOS (M1), watchOS, visionOS, Android. No web version | 2 routines | $5.00/month or $36.00/year | App Store listing |
| Session | Closing every focus block with a question | Asks what you learned when a session ends and reminds you to rest | macOS, iOS, iPadOS | Unlimited sessions and rests, analytics for the past 2 days | $4.99/month or $39.99/year | Session pricing |
Be Focused: separate timer settings for every task
A deep writing task in Be Focused might get long intervals, while a task you call "switch" gets a single short one. The gap between two pieces of work becomes a task with its own clock. Its listing describes intervals and tasks, and a reset with several distinct parts would live in your head or on paper.
Work runs in intervals with short and long breaks, and auto start for the next interval is optional. Leave it off and the app waits for you. That leaves room to jot down where you stopped before the next interval begins.
Its Pro list covers device sync, tags and filters, running Shortcuts on Be Focused events, CSV export and removing ads. On the Mac version, Pro can also block distracting apps and websites during work sessions, with an allow list for the ones you need. We couldn't confirm from the iPhone listing whether blocking works there.
Forest: a breathing break that sits between sessions
Forest grows a virtual tree while you stay off your phone. Its site describes Mindful Space as a sound-led breathing room with guided breathing, music, ambient soundscapes and visual scenes, meant for the gap between sessions before you start the next one. The free tier includes one soundscape. When your head is still buzzing from the last task, a guided breath slows you down without asking you to do anything.
Deep Focus handles the phone side. With it on, opening another app mid-session means tapping Give Up, and the tree dies. We didn't see a prompt in Forest for noting where you stopped on the last task. A notebook line covers the ready-to-resume part.
Routinery: a step-by-step reset you write once
Routinery is the app we make. It runs a routine of short steps on timers and says each step out loud, and the switch between tasks follows the same sequence every time. It has no web version. If you work on a Windows laptop, the timer runs on your phone or watch beside it.
You build the transition once. Something like writing a line about where you stopped and what comes next, closing the old task's windows, standing up and stretching, then opening the next file. Each step gets its own timer. The voice reads the step aloud and tells you what's next when it ends, which means you don't have to keep checking your phone while you're away from the desk. If a meeting starts early, pause, skip a step or adjust a timer mid-run.
For switches that land at the same time each week, like the jump from a standing meeting back to project work, you can set the weekdays and a time and get a reminder then.
Routinery doesn't track how often you jump between apps. It can't tell you which switches happen most, and it only helps with the ones you remember to start a routine for.
Session: a closing question at the end of each block
Once a focus session ends, a question pops up asking what you learned. Session also keeps a log of what you worked on and for how long.
The question lands right at the switch. It asks about learning, though, and the studies had people plan their return to the task. A sentence about where you will start next time closes that gap. Session also reminds you to rest between sessions, which is the space where a quick reset could go.
Its pricing page lists custom session and break lengths under Pro. On a Mac, Pro blocks the apps and websites you pick during a session and restores them when the session ends or you rest. We didn't find a way to run a sequence of steps inside the break.
How to choose: pick by what goes wrong at your switches
The right timer depends on which part of the switch keeps failing you. Where does yours break down first?
- Your next task starts while your head is still on the last one: Routinery, with a written reset that ends on a note about where you stopped.
- You already work in focus blocks and want a prompt when each one ends: Session.
- You need to get off your phone and breathe before the next block: Forest and its Mindful Space.
- Different kinds of work need different interval and break lengths: Be Focused, with timer settings per task.
You can combine them. A Session or Be Focused interval can end, and a short Routinery routine can handle the gap before the next one begins.
Getting started: a five-minute switch routine to try this week
Pick the one switch that costs you most, for example email to writing or a call back to your desk. Give it four steps and about five minutes. Write down where you stopped and the first action for when you return. Close everything from the old task. Get up for a minute. Open only what the next task needs.
Run the same steps at that one switch every day for a week before you add a second, and keep the written line even on rushed days, since that is the step the studies tested.
Our guide to building a transition routine for attention residue walks through each step and why it's there. If the timer needs to fit inside a bigger plan for your day, see the best apps that combine task scheduling, to-dos and routines.
Frequently asked questions: transition timer apps
What's the best timer app for a short transition routine between tasks?
If you want a few distinct steps, like noting where you stopped, closing tabs and standing up, Routinery fits best because each step has its own timer and a voice reads the next one aloud. If you only want a prompt when a focus block ends, Session asks what you learned at that moment. Forest suits a breathing break between sessions through Mindful Space, and Be Focused lets you give a "switch" task its own short timer.
What apps help people who switch tasks all day and can't refocus?
Look for an app that puts a fixed, repeatable step between tasks. That gives the last task a clear place to end before the next one starts. Routinery runs the same short reset at each switch and reads every step aloud, and you can follow it while you are away from the screen. Session closes each focus block with a question, and Be Focused lets each task keep its own interval and break lengths. If your phone is the problem, Forest's Deep Focus makes leaving a session cost you the tree.
Which productivity app helps you close one task before starting the next?
Session comes closest to a built-in close, since it asks what you learned once a session ends and keeps a log of what you worked on. Routinery lets you write the close yourself as the first step of a reset routine, for example a line on where you stopped and what you'll do first next time, with a timer so it doesn't sprawl. That matches the ready-to-resume plan from Leroy and Glomb's 2018 research, which reduced attention residue in people who were interrupted. We didn't find a closing prompt in Be Focused or Forest. With either one, that note goes on paper.
Does a break between tasks reduce attention residue?
In the studies cited here, the written plan is what reduced residue. Leroy's 2009 work found that unfinished tasks were hard to let go of, and Leroy and Glomb's 2018 research found that a short ready-to-resume plan reduced residue. A 2025 diary study of 50 employees found that writing these plans reduced residue at work too, though it relied on self-reports and studied interruptions. None of them tested a timer app. Use the timer to protect a minute for the written plan, then add movement or breathing if it helps you settle.
References: sources cited above
- Leroy S. Why is it so hard to do my work? The challenge of attention residue when switching between work tasks. Organizational Behavior and Human Decision Processes, 109(2):168-181, 2009.
- Leroy S, Glomb TM. Tasks interrupted: How anticipating time pressure on resumption of an interrupted task causes attention residue and low performance on interrupting tasks and how a "ready-to-resume" plan mitigates the effects. Organization Science, 29(3):380-397, 2018.
- van Zoonen W, Scharp YS. Managing daily work intrusions: An intervention to reduce attention residue and exhaustion. International Journal of Stress Management, 32(4):395-407, 2025. 50 employees, 200 diary entries.
About the author. Written by the Routinery team. We make Routinery, one of the four apps compared here, and it sits in the table on the same terms as the others, limits included. App details come from each app's official site, pricing page or App Store listing as of 2026-10-11. None of the studies cited tested an app, and this article doesn't claim any timer removes attention residue.
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