Log interventions
Keep the dose, timing, schedule, and what you actually took in one place.
iPhone beta now recruiting
Figure out what’s working for your health.
Track what you’re trying and how you respond, then learn from your own data instead of relying on guesswork and trial and error.
Free during beta · Any peptide · Currently iPhone only
How it works
The missing link between what you take and how you feel.
Track responses
Follow the symptoms and outcomes you care about, alongside useful health and wearable data.
Turn experiments into insight
N-of-1 Health analyzes your interventions, outcomes, and context over time to uncover what changed, what’s driving it, and where uncertainty remains.
Why it matters
Your experience can help build the evidence that peptide users don’t have.
Your de-identified results can contribute to a shared evidence base — turning thousands of scattered anecdotes into structured data the field can actually learn from.
And that value compounds. As the shared evidence base grows, it can give your own tracking more context and make your individual patterns easier to interpret. Each person’s data helps sharpen the picture for everyone.
You can opt out of contributing your data to the shared evidence base.
The beta
Help us make this simple enough to actually use.
The first beta is focused on the basics: setting up an intervention, logging what you take, and tracking what happens. We want people who will use it and tell us where the experience works — or doesn’t.
Any peptide user can join. We’re especially interested in BPC-157, retatrutide, and GLP-1 users as we begin building focused cohorts.
Why we built it
Built to bring more rigor to self-directed health decisions.
N-of-1 Health began as a tool built by a PhD neuroscientist for her own health decisions — a way to bring the rigor of real study design to self-experimentation instead of running on guesswork.
The team behind N-of-1 Health brings expertise in computational biology and scientific methods development, with clinical, medical, and regulatory advisors supporting the work.
FAQ
A few things to know before you join.
Who is the beta for?
Right now we’re looking for people who are currently using, or about to start using, peptides and want a more structured way to track what they take and how they respond. Any peptide user can join; we’re especially interested in BPC-157, retatrutide, and GLP-1 users as we begin building focused cohorts.
What will I actually do in the app?
You’ll set up the intervention you’re taking, log doses and adherence, and track the symptoms or outcomes that matter to you. This first beta is focused on making that core workflow easy enough to use consistently.
How will my data be used?
Your data powers your own longitudinal record in the app. By default, data collected through N-of-1 Health may also contribute to the shared evidence base across users. You’ll have the option to opt out of that use. Our Privacy Policy will explain the details of how data is collected, used, protected, and shared.
Is N-of-1 Health only for peptides?
No. N-of-1 Health is building an operating system for precision self-experimentation across health interventions. Peptides are where we’re starting because the need for better personal tracking and better shared evidence is especially acute.
Does N-of-1 Health tell me what I should take or how much?
No. N-of-1 Health is designed to help you structure, track, and understand your own data. It does not prescribe treatments or tell you to start, stop, or change a medication or peptide.
Join the beta
Try N-of-1 Health.
Enter your email and we’ll send the iPhone beta instructions and TestFlight link.
N-of-1 Health does not prescribe peptides or recommend that you start, stop, or change a treatment. The current beta is product testing.
We’ll use this email for beta onboarding and product-testing updates. No health information is collected on this page. See our Privacy Policy.