About Stopwatch Tools

What this site does

Stopwatch Tools is a collection of simple utilities like a stopwatch, timer, alarm, world clock, event countdowns, and randomizers. The focus is speed, readability, and shareable presets — links that open a tool already configured.

Most pages are static (pre-rendered) so they load quickly and work well on mobile. The interactive parts run on your device, not on a server.

Design principles

• No signups: the core tools work without accounts.
• Privacy-leaning: settings like theme and alarm sound are stored locally in your browser.
• Readable by default: large type, clean layouts, and simple controls.
• Shareable: many tools support preset URLs so you can send someone the exact configuration.

If you’re curious about what’s stored and what isn’t, see the Privacy Policy.

Offline and installable

Supported browsers may cache a small set of pages and assets for faster loading and limited offline use. On some devices, you can also install Stopwatch Tools to your home screen for quick access.

Accuracy and limitations

Timing features use browser timing APIs designed to be stable during a session. Still, alarms and background behavior can vary by browser and device power-saving rules. For important reminders, keep the tab open and interact with the page once so your browser allows audio.

These tools are built for everyday use (workouts, study sessions, cooking, classrooms), not safety-critical environments.

Contact

Feedback helps. If you spot a bug or want to suggest a feature, use the contact page or email support@stopwatch.tools.