Mission
We are democratizing vaccination by changing it from “according to schedule” to a customizable choice.
VaxCalc helps parents decide what they will—and won’t—do at each well-visit, before they’re in the room.
What’s Actually Happening at a Well-Visit
Most parents think a well-visit is a single decision.
It’s not.
Hep B. Vitamin K. RSV. Each is a separate decision—even when they’re presented all at once.
And those decisions often happen fast—while you’re being asked to agree.
Most parents don’t realize a decision just happened.
The Problem
Parents are expected to make important decisions in minutes—without a clear way to think them through.
The information exists, but it’s scattered across package inserts, schedules, ingredient lists, and injury data.
There’s no system for:
- Separating decisions within a visit
- Understanding what’s being recommended
- Seeing how decisions combine
- Deciding clearly before being asked to consent
So most parents default to going along with what’s presented.
What VaxCalc Does
VaxCalc turns a fast, pressured moment into a structured decision process you can work through ahead of time.
It breaks each well-visit into individual decisions and gives you a clear way to think through each one.
So when the moment comes—you already know what you’ll do.
Why I Built It
When my daughter was 12 months old, she had a severe reaction to a small amount of peanut butter.
I started reading every ingredient label that entered her body.
I assumed vaccines were presented in a similarly practical way.
They weren’t.
I found that parents were expected to make important decisions without a structured way to evaluate ingredients, cumulative exposure, side effects, or risk.
So I built one.
Who I Am
I’m Chris Downey—dad of three, software developer, and independent vaccine researcher.
VaxCalc is the system I built so parents can decide what happens at each visit—clearly and on their terms.