Check what a simple web tool does with your data
Inputs, browser storage and hosting requests are different things.
Look for a specific explanation
A useful privacy notice names the information involved and explains what happens to it. “Private” is less informative than a statement about whether an input is sent, saved or shared. Read the notice for the exact tool and edition you are using.
Separate calculation from website delivery
A browser can calculate a result using values you type without sending those values to a server. The browser still makes requests to load the page and its files. The host processes technical request information to deliver and protect the website. These are separate activities.
On this edition of Oivu Learn, timing inputs are used by a script in your browser. They are not submitted through a form request, placed in the page address or saved to browser storage. Reloading restores the initial example.
Understand the limits of local storage
Some tools save information on the device using browser storage. Saving locally does not itself establish who can access a shared device, how backups behave or whether other parts of an app send information elsewhere. Check the full service rather than relying on one storage feature.
Check again when features change
Advertising, analytics, account login and synchronization can introduce new data uses. A site should update its notice and provide applicable choices before enabling those features. Our public guide pages do not read the separate Oivu app's saved entries.
For a technical explanation of browser storage, see MDN's Web Storage API documentation. When reporting a problem, send the page address and non-sensitive example inputs. Avoid copying personal reflections into a support message.
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