PRO TOOLKITClean-Stopwatch · Unrestricted Edition

Instant Activation · 14-Day Money-Back Guarantee

Annual Pass · 14-day money-back guarantee

Master your time, without limits.

Unlock watermark-free embeds, custom Notion/OBS hex matching, ambient focus soundscapes, and multi-device sync. Backed by our 14-day money-back guarantee.

14 Days
Money-Back: 30+
Themes: 27+
Alarm Voices: $19
Per Year

Standard Access

Free

Essential timers for everyone.

Free foreverNo credit card

$0forever

Unlimited duration timer sessions

Included in Free:

Stopwatch, countdown & Pomodoro intervals
Unlimited timer duration (no caps or limits)
7 basic themes for clean displays
7 basic alarm sounds and chimes
Standard progress bar and ring styles
Basic chromeless embeds for Notion & OBS
Supported by light, non-intrusive banner ads
Drift-free accurate audio clock engine

Open Timer

Free forever · No credit card required
Unlimited sessions & full offline support

Pro Access

Pro

For streamers, educators, and serious focus.

Annual PassBest Value

$19/yr$49/yr

Equivalent to $1.58/mo · billed annually

Everything in Free, plus:

Instant activation · 14-day money-back guarantee
100% watermark-free embeds for Notion, OBS, & Obsidian
Custom hex & accent matching (blend with Notion dark mode)
Transparent stream overlays for Twitch, YouTube & OBS
All procedural ambient focus sounds & lo-fi soundscapes
All 27+ synthesized speech and melodic alarm voices
All 30+ bespoke themes (Pixel, Sakura, Vaporwave, etc.)
Palette Generator & Color Suggestor with contrast preview
Audio sound loops and repeat alarm cycles
1 personal CS- license key covers your PC, phone, and tablet

Upgrade to Pro — $19/yr

Instant activation · 14-day money-back guarantee · Apple Pay, Google Pay & Card

Already have a Pro license?

Multi-device

One personal CS- key covers your PC, phone, and tablet. Enter the license key from your Polar receipt email to activate on this device.

Detailed Breakdown

Compare plans side by side

Everything you get in the free edition alongside the full Pro toolset.

Feature	Free ($0)	Pro ($19/yr)
Core Timing & Accuracy
Drift-free audio clock engine Stays accurate even when browser tabs are throttled in the background
Stopwatch, countdown & Pomodoro blocks Standard interval and counter timing workflows
Unlimited timer duration Run stopwatch and countdown sessions for any duration without caps
Lap split tracking and history Record lap timestamps and export split times
Themes & Visual Customization
Theme catalog access Color palettes including Pixel, Sakura, Vaporwave, and Midnight	7 basic themes	All 30+ themes
Palette Generator & Color Suggestor Design custom themes with smart color suggestions and contrast checks	—
Typography and digit styling Select from clean monospace, classic digital, and modern sans	Standard mono	All custom fonts
Hide milliseconds toggle Clean single-second readout to reduce visual distraction	—
Custom transparent overlay text color Match your OBS Studio scene or Notion workspace scheme	—
Audio & Alerts
Alarm voices and chime sound library Synthesized speech countdowns and melodic chimes	7 basic sounds	All 27+ audio voices
Audio loop and repeat cycles Repeat alerts until manually dismissed	—
Volume boost and pitch tuning Louder acoustic alerts for classroom and loud environments	—
Streaming & Embedding
Embed in Notion, OBS, and web pages Chromeless iframe embed with customizable URL parameters
Embed Configurator & branding removal Hide the footer credit link completely on live embeds	—
Custom watermark message Display your stream handle, channel name, or class code	—
Ad-free experience Completely remove all banner advertisements	—
Licensing & Support
1 personal license key for all devices Use on your personal PC, Mac, phone, and tablet with one key	Single device	Unlimited personal devices
14-day money-back guarantee 100% full refund in 1 click if not completely delighted	—
Self-serve 1-click Polar customer portal Instant cancellation and payment management with zero friction	—
Future Pro features included All new Pro updates and sound releases included automatically	—

Free Plan

$0 forever

Stopwatch, countdown & Pomodoro intervals
Unlimited timer duration (no caps or limits)
7 basic themes for clean displays
7 basic alarm sounds and chimes
Standard progress bar and ring styles
Basic chromeless embeds for Notion & OBS
Supported by light, non-intrusive banner ads
Drift-free accurate audio clock engine

Pro Plan

$19/yr (about $1.58/mo)

Annual Pass

Instant activation · 14-day money-back guarantee
100% watermark-free embeds for Notion, OBS, & Obsidian
Custom hex & accent matching (blend with Notion dark mode)
Transparent stream overlays for Twitch, YouTube & OBS
All procedural ambient focus sounds & lo-fi soundscapes
All 27+ synthesized speech and melodic alarm voices
All 30+ bespoke themes (Pixel, Sakura, Vaporwave, etc.)
Palette Generator & Color Suggestor with contrast preview
Audio sound loops and repeat alarm cycles
1 personal CS- license key covers your PC, phone, and tablet

Polar.sh Merchant of Record

Compliant global billing, tax handling, and instant invoicing across 100+ countries.

256-Bit SSL Encryption

Bank-grade encryption protecting payment details via Stripe and Polar infrastructure.

14-Day Money-Back Guarantee

Immediate unrestricted Pro access on day 1. 100% full refund in 1 click if not delighted.

1-Click Cancellation

Self-serve customer portal link in every receipt. Cancel or switch plans in seconds.

Frequently Asked Questions

Common questions about Pro

Straightforward answers on pricing, guarantees, license keys, and self-serve management.

How does the 14-day money-back guarantee work?

You get immediate full Pro access on day one. If CleanStopwatch Pro is not the cleanest, most reliable timer for your workflow, request a refund within 14 days for a 100% full refund with zero questions asked.

What do I pay for CleanStopwatch Pro?

CleanStopwatch Pro is a single, transparent $19 per year (about $1.58/month). There are no hidden fees, tiered pricing traps, or surprise monthly charges.

How do license keys work across devices?

One Pro license covers all your personal devices including your desktop, laptop, mobile phone, and tablet. Once subscribed, your license key is shown immediately and sent via email. Enter that key on this upgrade page on any device to unlock Pro immediately. No account or password creation is needed.

How do I cancel or request a refund?

All subscriptions and billing are managed by Polar.sh as Merchant of Record. You receive a direct link to the self-serve Polar customer portal in every receipt, where you can cancel renewal in one click or update payment details at any time.

Can I switch or update my billing details?

Yes, you can manage payment methods, update billing details, download VAT invoices, or cancel renewal at any time directly through the Polar customer portal link sent with your receipt.

What happens if my subscription ends?

If you cancel renewal, you will maintain full Pro access until your paid annual period completes. Afterward, your app automatically transitions to the Free plan. All your custom timer settings and presets remain saved locally.

Instant activation · 14-day money-back guarantee

Elevate your timing experience

Get full Pro access immediately for just $19/yr (Equivalent to $1.58/mo). Backed by our 14-day money-back guarantee with 1-click refund if not delighted.

Upgrade to Pro — $19/yr Open Free Timer