Short answer: the best timer for ADHD is the one you'll actually start. Look for a visible countdown, short one-tap presets (10 or 15 minutes), an alarm you can't miss, zero setup and, for hyperfocus days, a count-up mode. FlowTime's free ADHD timer has 10/2, 15/5 and 25/5 presets and needs no sign-up.
A note before we start: timers are organising tools, not treatment. They don't replace advice from a doctor or other qualified professional.
Why a timer helps many people with ADHD
Many people with ADHD describe "time blindness": time is hard to feel, so "later" turns into never, and a task with no clear end is hard to begin. A timer makes time visible and gives the task a start and an end. "Work for 10 minutes" is a much smaller ask than "do the report", and that is often enough to get going.
6 features that matter
1. You can see time passing
A big number or shrinking ring makes time concrete. Being able to glance at your browser tab and see "07:42" without switching windows helps even more.
2. Short presets
The classic 25 minute Pomodoro can feel long on a hard day. Look for 10 and 15 minute options with short breaks, such as 10/2 and 15/5, so the first step is small.
3. One tap to start
Every setting you have to choose before starting is another chance to get distracted. A good ADHD timer opens ready to go.
4. An alarm that reaches you
If you wander to another tab, the alarm still needs to sound. Check that the timer you choose plays its alarm in a background tab and that your device volume is on.
5. A count-up option for hyperfocus
Hyperfocus can be productive but costly if it runs through meals and breaks. A count-up timer shows how long you've been going and works out a fair break when you stop. See the flow timer and the Flowtime break chart.
6. Few distractions, no account
Pop-ups, ads around the timer and sign-up walls all pull attention away. The simpler the screen, the better.
Settings to try
| Preset | When to use it |
|---|---|
| 10 min focus / 2 min break | Starting feels impossible; you just need to begin |
| 15 / 5 | A steady rhythm for most tasks |
| 25 / 5 | The classic Pomodoro, once shorter blocks feel easy |
| Count-up (break = work ÷ 5) | Days when you're absorbed and don't want an alarm |
Treat these as experiments. Keep what works and drop what doesn't. For more on lengths, read Pomodoro for ADHD: timer settings that work.
Types of ADHD timers
- Physical visual timers. Dial timers that show a coloured section shrinking. Good if you want something off-screen and away from your phone.
- Phone timers. Always with you, but the phone itself is often the distraction.
- Browser timers. Nothing to install, they sit next to your work and can show time in the tab. FlowTime is one of these.
- Full focus apps. Add tasks, streaks and stats. Helpful for some, overwhelming for others.
What FlowTime offers (and doesn't)
FlowTime is free with no account. The ADHD timer has 10/2, 15/5 and 25/5 presets; every countdown shows the remaining time in the browser tab and plays an alarm in background tabs. The full app adds tasks, streaks, ambient sounds (including brown and white noise) and a count-up Flow mode. Data stays in your browser. It doesn't sync between devices and it isn't a physical timer, so if you need something off-screen, a dial timer may suit you better.
Also useful: the 10 minute timer, the 15 minute timer and the break timer with break ideas.