Privacy

The free tools send your data nowhere: they run entirely in your browser. If you buy something we hold your email address and a record of what you bought, because otherwise we cannot give you the thing you paid for. Microsoft Clarity records how pages are used, which is how we learn which parts of a page confuse people, and its limits are enforced in code rather than promised: it is switched off entirely on the reading pages, so neither the paid text nor the watermark carrying your email address is ever recorded, and every tool's output is masked, so a replay shows that a chart appeared and never the numbers in it. There is no advertising pixel and nothing here is sold or shared for marketing. While you read, each page displays your own email address tiled faintly across the text, so that a leaked screenshot is attributable to the account it came from; it is rendered in your browser and reported nowhere.