aimy.bio — free biorhythm calculator
your wellness planner
Privacy at aimy.bio isn’t a slogan — it’s built into the architecture. Here is exactly what that means, point by point. Every promise below is something you can check.
We never send your name, birth date or diary anywhere — everything is computed locally and we cannot see it. Your data leaves the browser only when you export it yourself: the pair card carries both names, and a .ics calendar file reveals your birth date to whoever holds it.
No cookies, no ads, no third-party trackers. We even self-host our fonts, so nothing leaks to outside companies.
We count visits with Plausible on our own EU server — cookieless, and your IP is used only momentarily and never stored.
Optional, double opt-in, off by default. We send only rounded anonymous numbers — never your birth date, ratings or any identifier — and your IP is not logged.
The research code and data are open, and the study protocol is publicly pre-registered — frozen with a timestamp before any data. Every promise on this page can be verified — transparency by design, not “trust us”.
Biorhythms are a tool for reflection, not a diagnosis. We’re honest: the method is not scientifically proven, and we say so plainly.
The engine and method spec are open source — MIT + CC BY. Don’t take our word for it, verify it yourself. See the code on GitHub.
This isn’t marketing — it’s how the app is built. For the technical detail, see our privacy policy — or explore the engine itself on our open source page.