About Us | Belly-Bell

Honestly, we built this site out of frustration. When someone close to us got pregnant, we went looking for a simple due date calculator — something quick, free, and not buried under popups asking for an email address. We couldn't find one we actually liked.

So we made our own. That was one tool. Then two. Now there are seven, and a growing blog. It's not a startup. There's no VC money or a team of 40 people. It's a few developers who also happen to be parents, building the tools we wish had existed.

What we actually care about

No signups. No paywalls. No emails asking you to "complete your profile." You open a calculator, use it, get an answer. That's it. We run a few ads to keep the lights on — it's not glamorous, but it means we can stay free without selling anyone's data.

The tools we have right now

Due Date Calculator, Ovulation Calculator, Fertile Window Calculator, Period Tracker, Baby Gender Predictor (the old Chinese lunar calendar method — fun, not science), Pregnancy Week Calculator, and a Conception Calculator. More coming when we have time.

One thing we want to be clear about

None of this is medical advice. The calculators use standard formulas — Naegele's rule, typical cycle math — but pregnancy is different for everyone. If something feels off, talk to your doctor. We're tools, not a replacement for real care.

Questions or feedback? Reach us at hello@belly-bell.com — we actually read it.

⚕️ We are not medical professionals

Belly Bell is built by a small team of software developers and researchers. None of us are doctors, midwives, nurses, or licensed healthcare providers of any kind. We have no medical training, and nothing on this website should be interpreted as medical advice, diagnosis, or treatment.

Our calculators use well-established obstetric formulas (such as Naegele's Rule for due dates, and standard cycle-length adjustments for ovulation estimates). These are the same formulas used as a starting point by healthcare providers, but they produce statistical estimates — not personalised clinical assessments.

Always consult a qualified obstetrician, midwife, or general practitioner before making any decisions about your pregnancy, fertility, or reproductive health. Your healthcare provider has access to your full medical history and clinical examination findings that no calculator can replicate.

📋 Our editorial standards

Every article published on Belly Bell is:

Written with reference to published medical guidelines (ACOG, RCOG, WHO) and peer-reviewed research
Reviewed internally for factual accuracy before publication
Clearly labelled as educational content, not medical guidance
Updated when guidelines change

We do not accept sponsored medical content. Our only revenue source is display advertising (Google AdSense). Advertisers have no influence over our editorial content.

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