Privacy Policy

Last updated: 30 May 2026

The short version

  • Your health data (glucose, blood pressure, weight, medications, food, photos, reminders) stays on your phone. We do not run servers that store it.
  • You can use the app without creating any account.
  • If you tap Analyze with AI on a food photo, or send a message to the AI companion, that photo / message is sent to a third-party AI proxy to generate the response. Nothing else is sent.
  • Subscriptions are handled by Apple and Google. We use a third-party subscription-management service to verify your entitlement — no personal information.
  • Google Drive backup is optional. If you enable it, your data is uploaded to your own Drive, hidden from your normal Drive view, and Glens never sees it.
  • We do not track you. No analytics. No advertising IDs. No location.

What we store on your device

Glens stores the following on your phone, in the app’s local encrypted storage:

  • Glucose readings (value, context, time, optional note)
  • Blood-pressure entries (systolic, diastolic, pulse, time, optional note)
  • Weight entries (value, unit, time, optional note)
  • Medication doses (name, dosage, type, time of day, time, optional note)
  • Food log entries (description, detected items, carbs, sugar, optional photo, time, optional note)
  • Reminders, your in-app settings, and AI chat history

This data is on your device only. Glens has no servers that store it.

What gets sent to a third-party AI service

Two features in Glens send data to a third-party AI provider so the model can generate a response:

  • Snap Food → Analyze with AI: when you tap Analyze, the photo (resized to ~1024 px) is sent to our AI provider along with a nutrition-estimation prompt. The provider returns identified items and estimated carbs and sugar.
  • AI companion (chat & voice): when you send a message, your message text and a short summary of your recent readings is sent to our AI provider to produce a contextual response.

Glens does not retain copies of these requests on its own infrastructure. The AI provider’s own privacy policy governs how they handle the request while it is being processed.

Optional Google Drive sync

If you sign in to Google Drive in Settings → Sync, Glens uploads an encrypted snapshot of your data to your own Google Drive App Data folder (hidden from your normal Drive view). Only you and apps you authorize can read it. Glens itself never receives or stores your data.

Subscriptions

Pro features are billed by Apple App Store and Google Play. To verify whether you have an active subscription, Glens uses a third-party subscription-management service, which receives an anonymous identifier — no email, no name, no health data.

Device permissions we ask for

  • Camera — to snap a meal photo.
  • Photo library — to choose an existing meal photo.
  • Notifications — for reminders.
  • Exact alarms / Full-screen intent / Foreground service (Android) — only for alarm-tier reminders that need to wake the screen.

What we do NOT do

  • We do not require an account, email, or password.
  • We do not collect analytics events.
  • We do not use advertising identifiers.
  • We do not access your location, contacts, or calendar.
  • We do not sell or share your data with any third party for marketing.

Health data (Google Play Data Safety)

Glucose, blood pressure, weight, medication, and food entries are Health and fitness data under Google Play’s Data Safety classification. Glens treats them with extra care; they are not sold and not shared except as described above.

Children

Glens is not intended for users under 13 years old (under 16 in the European Economic Area).

Your rights

You can view, export, or delete any data at any time from Settings → Export or Settings → Reset. Uninstalling the app removes all local data.

Changes to this policy

If we materially change this policy, we will update the Last updated date and surface an in-app notice on first launch after the change.

Contact

Questions? Email support@glens.app.