About
Why this exists
Stack Precision is a supplement and peptide tracking app built by one person, Jeff Goodman, for a problem he had himself: most people taking supplements are guessing, and the tools meant to help can't see them.
The problem
The data that could answer you sits scattered
Nothing on the market connects what you take with how you feel over time, in one private place. Generalist AI forgets you between conversations. Forums describe someone else's body. A doctor sees you a few times a year. So the data that could answer your questions sits scattered, and the patterns in it stay invisible.
Why now
The pieces finally exist at once
Consumer genetics, wearables, and capable AI all exist at once now, for the first time. What was still missing was a private place to hold them together and read across them. That gap is the whole reason Stack Precision exists.
What he built
One private place that reads across all of it
Stack Precision holds what you take, your meals, your genetics, and how you feel in one private record, and reads across them over time. It is the place that was missing: somewhere to keep the pieces together and read them against each other, tuned to you rather than to a stranger.
How it's run
Run by one person, paid for by subscriptions
Stack Precision is a solo project. It is paid for by the people who subscribe, not by selling your data or handing it to advertisers. Your data is never sold, and it is never used to train public AI models.
The founder
Built by Jeff Goodman
Stack Precision is built by Jeff Goodman, a solo developer running a long stack of his own. He is the person it was built for: someone who spent years trying to make sense of his own health data and hit the same dead ends everyone hits. The instrument reads his data the same way it reads yours.
Use the instrument its maker uses
Always free, built on HIPAA-compliant infrastructure.
Always free. On iOS and Android.