Frequently Asked Questions
Everything you need to know about technical precision, cross-device support, and performance optimizations on StopwatchPro.
Is StopwatchPro really free to use?
Yes. StopwatchPro is completely free with no user registration requirements, no installation requirements, and no tracking premiums. It executes directly inside any modern web environment.
How accurate is the online stopwatch?
Our infrastructure tracks elapsed duration down to the millisecond utilizing your browser system's high-resolution performance timeline interface (`performance.now()`). This ensures millisecond precision disconnected from network ping fluctuations, ideal for metrics-driven data tracking, labs, or cooking tracking profiles.
Does StopwatchPro function properly when the browser tab is minimized or in the background?
Yes. Because timing tracks systemic delta metrics based on structural CPU timestamps, the absolute running calculation remains true even if tab processing cycles get throttled by system background layers. However, visual state ticks (`requestAnimationFrame`) pause when out of view to optimize memory footprint usage until you switch back.
Can I use StopwatchPro without an internet connection?
After the application shell parses successfully on your target framework the first time, all computing logic handles local state runtimes natively. You can remain completely offline while retaining access to control elements, hotkeys, and lap splits.
Does StopwatchPro store or track my lap times?
No. Your recorded laps reside inside memory scopes mapped localized to your running browser tab context. Closing out structural view frames or performing page renewals purges the active stack instantly. Your analytics remain private to your local system.
What keyboard shortcuts are supported?
For high-efficiency operations, you can control the tracking mechanisms via the following mapping triggers directly:
- Spacebar: Toggle runtime states between Start and Paused values.
- L Key: Execute lap recording profiles on active counters.
- R Key: Clear current data structures and reset tracking frames.