Privacy notice
Last updated 6 November 2026
Strata uses your records to run the app and sync your data. It does not sell your data, share it for marketing or include advertising or third-party analytics software. Strata records how its features are used and uses de-identified data for research. The sections below explain these uses and when separate permission is required.
What Strata collects
Strata collects the records you add to the modules you use: food, weight, workouts, activity, sleep, recovery measurements, custom trackers, periods, body measurements, medication doses, bowel movements, skin changes and notes. It also holds your account email, settings and the details you provide to calculate targets: height, weight, birth year, sex and activity level.
Turning a module off hides it without deleting its records. They reappear when you turn it back on. You can delete a module’s data separately.
Where it is stored
Strata is designed to store account records in London, UK, encrypted in transit and at rest. Logs save on your phone first, then sync to your account. Progress photos stay on your phone. Cycle records are device-only unless you enable syncing. AI processing is described separately below.
The AI features
Coach and weekly reports send shared records to an AI provider through OpenRouter. Strata asks for your permission first, and names who receives them. Requests require a provider that does not use them for training or retain them. You can withdraw permission in Settings. AI sharing starts on for food, weight, workouts and most other modules, and off for cycle, medication, gut and skin. You can change it for each module in Settings to include or exclude its records from Coach and reports.
The standard nutrition-label scanner uses Apple’s text recognition on your phone. Its photo is not uploaded. If you choose AI label reading or meal estimating, the selected photo is sent to Strata’s API and the AI provider for processing. Strata does not save or log the photo, and the AI request has the same no-retention requirement described above.
If you connect your own AI app, such as Claude, it can read your log at your request, on your own account with that provider. The connection is read-only, approved in the app, listed in Settings → Connected apps, and revocable there. The connected provider’s own terms govern its handling of the data it receives.
Services that process your data
| Service | What for |
|---|---|
| Supabase | Database and sign-in, in London |
| Railway | The API and background jobs |
| Resend | Sign-in codes and account email |
| OpenRouter | AI requests, with no training and no retention |
| Food databases | Search and barcode lookups, which carry the search, not your identity |
| RevenueCat and Apple | Subscriptions and notifications |
Adding a service to this list is a published change, made before it is used.
Research
Strata’s research policy allows de-identified data to be used to improve its rules. Weight is grouped into 5 kg bands, birth year into five-year bands, and dates are removed. Groups with fewer than fifty people are excluded. This use does not require the separate opt-in below. Cycle, medication, sleep, recovery, gut, skin and note records are excluded, as is text you enter, including food and tracker names.
Research using identifiable data or text you have written requires separate permission in Settings → Improve Strata. These permissions start off. You can withdraw them there, and you do not need to grant them to use the app.
How long it is kept
- Your log: for the life of your account, including modules that are switched off.
- Coach messages: retained with your account; there is currently no automatic 18-month deletion or summarisation.
- Label and meal photos sent for reading: not kept at all.
- Insight calculations: generated when requested. Weekly reports are saved to your account.
- Data exports: the file is deleted after 24 hours, and when your account is purged.
- Deleted accounts: a 30-day grace period, then purged. A record of the permissions you gave or withdrew is kept for six years as legal evidence, without anything that identifies you beyond a random id.
Your rights
You can export everything from Settings, correct anything you logged, and delete your account in the app. This notice describes the current product and data policy; it will be updated with the operator’s contact details before launch.
Age
Strata is for people aged 18 and over.