Dr. Kate Masterson, DC

Osmi is built for a woman whose labs come back normal while she still feels awful. We wanted the person advising us on it to have been that woman, and to have sat on the other side of the desk too. Kate is both.

Her practice bio tells that story plainly: diagnosed with Hashimoto's, then lost and helpless for a while, trying protocol after protocol without getting much clearer. It's why she talks about the condition the way her patients talk about it rather than the way a textbook does.

She sees patients most days. She helps them understand what their bodies are telling them, work out what's driving their symptoms, and take charge of their own health. Her practice describes her as looking at the body through three lenses at once, structural, emotional and chemical, which is a longer way of saying she starts from the whole woman rather than from one number on one page.

That's the part we needed. Osmi is a record, not a diagnosis. It files every lab result against the range your own lab printed, stacks each re-draw on the same card so you can see what moved, and puts the daily record of how you actually felt right beside numbers that move two to four times a year. What that record should hold, in what order, and what it must never say, is as much a clinical question as a product one.

So Kate advises on what we're building. She reads the screens before they're screens. She tells us where a woman who knows her own condition would stop trusting us, which is usually the moment an app flattens something she can feel is more complicated than that. She tells us which screens she'd keep and where she'd want more from them, and that runs straight into the limit Osmi has to hold: "what does this mean for me" is the one question we have to decline to answer and still be worth opening in the morning. And she tells us how it looks from the practitioner's chair when a woman arrives having done everything right and still doesn't feel better, which is not the same story we hear from the waiting room.

She's also useful to us in a way that has nothing to do with credentials. She has Hashimoto's. When we put a screen in front of her and a sentence on it is technically defensible but lands wrong for a woman living with the condition, she's the one who says so.