Small, private, genuinely useful tools. No ads, no sign-up — everything runs in your browser.
Get a personalised daily hydration target from your weight, activity, and climate.
Enter your numbers to see your AHA blood pressure category. Reference only, not a diagnosis.
Tap for a fresh, thoughtful writing prompt to beat the blank page.
Play white, pink, or brown noise in your browser with a sleep timer. No downloads, no ads.