For prescribers
The page your patient may hand you
Light Years is a self-tracking app some of your patients use during GLP-1 therapy. If one brings a printed or on-screen summary to an appointment, here is exactly what it is — and what it isn't — so you can read it in the few seconds it's meant to take.
What's on the page
A smoothed weight trend over the period, the raw readings behind it, the medication and dose the patient recorded, any dose changes with their dates, and a short list of questions the patient flagged for you. One page, no dashboard.
Where the numbers come from
Entirely from the patient. Weights are their own scale readings; doses are what they logged taking; the trend line is a weighted moving average of those weights, meant to show direction through daily water noise. Nothing is inferred, scored, or clinical — it is the patient's own record, tidied.
What it isn't
Not a medical device, not diagnostic, and not a source of advice or dosing recommendations — the app never makes them. It does not connect to an EMR, pharmacy, or lab. It is simply a patient's self-reported history, organized for a conversation.
Privacy and provenance
The data lives on the patient's own device, with optional encrypted sync so they can reach it across their phone and laptop. They own it, they can export it as a plain CSV, and they choose whether to share it with you. Light Years has no advertising and no trackers.
Questions about the summary or how the trend is calculated? Email the builder — a real person answers.