What does n1lab record?
The check-in data, food trials, weight readings, and free-text notes you enter in the app. Nothing else.
The inventory below is exhaustive. If a field is not on it, the app does not collect it.
Where is my data stored?
On your device, by default. If you enable sync, an encrypted copy lives in iCloud or your chosen cloud — never on our servers.
n1lab does not operate a backend that stores your check-ins. Sync is end-to-end encrypted; the encryption key never leaves your device. We could not read your data if we wanted to, which is the only honest version of "we don't read your data."
Who can see my readings?
You. Nobody else, by default.
If you choose to export your data — to share with a clinician, a researcher, or yourself — n1lab generates a file you control. The export is a one-time act, not a standing share. There is no "shared with my doctor" toggle. There is no team plan.
We do not have a partnerships team, an enterprise plan, or a research arm. If a future version of n1lab ever supports sharing, it will be opt-in per export, and the export will state what it contains, in plain language, on the export screen.
Does n1lab use my data to train models?
No. Not now and not later. Your readings are not training data.
Where the app uses a model — to surface a possible association in the weekly review, for example — the model runs on-device and on your data only. No reading you record leaves your device for the purpose of improving any model.
This is not a policy we expect to revisit. The product would be a different product if we did.
Can I export everything?
Yes. Two formats: CSV for spreadsheets, and JSON for everything else.
The export contains every reading you have entered, with timestamps preserved. No fields are dropped, summarised, or rewritten. The export schema is documented in the help pages and stable across versions — a CSV exported today will load against a script written next year.
Can I delete everything?
Yes. Settings → Account → Delete account erases the local database and removes your email from our server.
Deletion is permanent and immediate; there is no recovery window. If you have an encrypted backup in iCloud, it is your responsibility to remove that separately — we cannot delete files we cannot read.
What about crash reports and analytics?
Off by default. If you opt in, the only thing we see is anonymous crash traces.
No event tracking, no funnel analytics, no session replays. If a feature isn't used, we'll find out by asking beta testers, not by counting taps. This is slower; it is also a different product.
Is n1lab a medical device?
No. It records observations. It does not diagnose, treat, or recommend.
The patterns the app surfaces are suggestive at best. They are intended to be brought into a conversation with a clinician, not to replace one. If a symptom is concerning, the right next step is care, not another reading.