Zero-friction focus tools for
deep work.
Free online timers and cognitive engines engineered for flow states, Pomodoro cycles, and ADHD time management. Zero registration, zero ads, instant execution.
Eisenhower Priority Matrix
Interactive 4-quadrant prioritization board to categorize tasks by urgency and importance with drag & drop and Markdown export.
- Interactive 4-quadrant drag & drop
- Browser localStorage auto-save
- 1-click Markdown & CSV export
Ambient Focus & Noise Generator
Procedural noise generator with brown noise, pink noise, rain, café ambience, and 10Hz alpha binaural beats.
- Pure Web Audio procedural synthesis
- Custom multi-track soundboard
- Sleep & focus auto-stop timer
Custom Interval & Tabata Timer
Programmable workout & sprint timer with configurable work/rest rounds, audio countdown beeps, and fullscreen display.
- Tabata, HIIT, and EMOM presets
- 3-2-1 audio countdown cues
- Custom rounds, work, and rest
Work Hours & Time Card Calculator
Calculate daily and weekly work hours, lunch breaks, overtime pay, and gross earnings with 1-click CSV & PDF export.
- Automatic lunch break deductions
- Overtime pay & gross wage math
- Export to CSV, Print & PDF
Online Stopwatch & Lap Timer
High-precision digital stopwatch with split times, lap recording, keyboard shortcuts, and full-screen display.
- Millisecond performance timing
- Fastest & slowest lap detection
- Hotkeys: Space (Start/Stop), L (Lap)
Classroom Timer & Presenter HUD
High-visibility fullscreen countdown timer engineered for classrooms, workshops, agile standups, and stage presentations with audio alerts.
- 1-click native fullscreen projection
- Giant digits visible across lecture halls
- Preset intervals & audible bell chime
Aesthetic Pomodoro Timer
Tranquil, distraction-free study & Pomodoro timer featuring customizable ambient color palettes, dark glassmorphism, and gentle chimes.
- Zen, Midnight, Sunset & Ocean palettes
- 25/5, 50/10, 20/5 interval presets
- Distraction-free Study With Me mode
5 Minute Focus Timer
The ultimate anti-procrastination sprint timer. Leverage the 5-minute rule to defeat resistance and start dreaded tasks.
- Near-zero initiation threshold
- Auditory finish alert chime
- Anti-procrastination trigger
10 Minute Countdown Timer
High-speed 10-minute focus sprint built for inbox clearing, quick bursts, and overcoming severe task initiation resistance.
- Zero-friction activation threshold
- Auditory finish alert chime
- Instant momentum builder
15 Minute Countdown Timer
High-leverage 15-minute timeboxing interval engineered to eliminate drag, review code, and maintain rapid execution pace.
- Parkinson’s law timeboxing constraint
- Clear auditory completion alert
- Optimal PR & triage sprint
20 Minute Focus Timer
The gold-standard sprint interval for overcoming ADHD task paralysis and initiating friction-free focus blocks.
- Low task-initiation threshold
- Auditory finish alert
- Distraction-free minimal HUD
25 Minute Pomodoro Timer
The traditional Pomodoro rhythm engineered for structured study blocks, inbox zero sprints, and knowledge work.
- Authentic 25/5 rhythm cadence
- Automated session counting
- Background browser tab audio
30 Minute Deep Work Timer
An extended cognitive runway designed for coding, architecture design, and complex writing where flow state requires warmup.
- Uninterrupted immersion block
- Cognitive residue reduction
- Full-screen ambient mode
45 Minute Focus Timer
The gold-standard 45/15 ultradian focus block. Perfect for extended writing, complex engineering, and realistic exam simulation.
- Ultradian rhythm alignment
- Auditory finish alert chime
- Minimalist distraction-free UI
50 Minute Study Timer
The academic gold-standard 50/10 study block. Ideal for university finals prep, Anki sprints, and intense textbook reading.
- 50/10 memory consolidation rhythm
- Gentle audible finish chime
- Distraction-free dark mode UI
60 Minute (1 Hour) Focus Timer
Uninterrupted 1-hour cognitive block designed for complex software development, thesis writing, and heavy problem-solving.
- Full 1-hour immersion block
- Auditory finish alert chime
- Minimizes task switching residue
5 Minute Break Timer
Restorative interval to step away from the screen, rehydrate, and reset your directed attention capacity between sprints.
- Active attention replenishment
- Gentle transition chime
- Hydration & stretch prompt
Floating Pomodoro Timer
Compact always-visible timer window that floats above all apps, browser tabs, IDEs, and documents without stealing focus.
- Always-on-top window pin
- Zero screen clutter footprint
- Standalone browser popout
Focus Protocol Matrix
Compare interval lengths by cognitive objective, neurotype compatibility, and attentional mechanism.
| Protocol | Optimal For | Cognitive Mechanism | Action |
|---|---|---|---|
5 min 5-Minute Focus SprintFriction Elimination | Task Avoidance & Dread The 5-minute rule to break initial resistance on high-friction projects. | Reduces perceived task commitment to bypass amygdala threat perception. | Open |
10 min 10-Minute Micro-SprintMomentum Builder | Severe Procrastination & Inboxes Inbox zero sprints, breaking task paralysis, and quick administrative bursts. | Lowering the commitment barrier triggers the Zeigarnik effect and bypasses prefrontal dread. | Open |
15 min 15-Minute Timebox SprintPaced Execution | Code Reviews & Drafting PR triage, writing memo drafts, reading papers, and constrained execution. | Parkinson’s law timeboxing eliminates over-deliberation and sharpens focus. | Open |
20 min 20-Minute Focus IntervalActivation Sprint | ADHD & Task Initiation Procrastination, low dopamine states, and getting through morning friction. | Dr. Russell Barkley research shows externalizing time into 20-min blocks lowers prefrontal cortex resistance. | Open |
25 min 25-Minute Classic PomodoroStructured Cadence | General Knowledge Work Study blocks, emails, reading, and structured day schedules. | Francesco Cirillo 25/5 rhythm creates rhythmic urgency while preventing mental fatigue build-up. | Open |
30 min 30-Minute Deep Work BlockImmersion Runway | Complex Problem Solving Coding, technical writing, system design, and creative generation. | Flow state requires 10-15 minutes of uninterrupted focus to shed attentional residue. | Open |
45 min 45-Minute Ultradian BlockSustained Flow | Architecture, Writing & Exam Prep Complex engineering tasks, essay writing, and academic problem sets. | Capping deep work at 45 minutes maximizes prefrontal cortex performance before glucose depletion. | Open |
50 min 50-Minute Study Timer50/10 Rule | Exams, Anki & Problem Sets College students, med school candidates, and high school finals prep. | Memory consolidation curves show cognitive retention decays after 50 minutes without a 10-min rest. | Open |
60 min 60-Minute / 1-Hour Deep WorkFull Hour Flow | Architecture, Writing & Exam Simulation Senior engineers, thesis writers, and exam candidates simulating 1-hour blocks. | Sophie Leroy research demonstrates single-task 60-min blocks eliminate attentional residue. | Open |
Frequently Asked Questions
Everything you need to know about our free focus timers and cognitive protocols.
Which timer duration is best for adults with ADHD?
Most ADHD adults find the 20-minute timer or floating Pomodoro timer most effective. Clinical studies demonstrate that having a persistent countdown visual cue on screen compensates directly for time blindness and reduces task abandonment by up to 60%.