1. Overview

ExtraBrain (“we”, “the App”) is a personal memory assistant for iPhone. Our design goal is on-device first: your notes, imported documents, embeddings, and recall answers are processed and stored on your device by default. This policy explains what limited account data may leave the device.

2. Data we process on your device

• Memories you create or import (text, PDF, DOCX, Markdown, and derived chunks/summaries).
• On-device embeddings and search indexes used for recall (RAG).
• On-device speech recognition audio processed locally when you use voice input (not uploaded for ASR).
• Local preferences such as appearance and trial status stored with Keychain / UserDefaults.

These content items are not uploaded to ExtraBrain servers for storage or model training.

3. Data we may receive on our control-plane servers

To manage sign-in, free trial, and Pro subscription entitlement, our cloud control plane may process:

• Apple Sign In identity tokens / user identifiers (and email only if Apple provides it).
• Subscription / transaction identifiers needed to validate App Store purchases.
• Device or install identifiers used only for license / trial anti-abuse.
• Basic technical logs (timestamps, API status codes) for reliability and fraud prevention.

We do not store your memory bodies, document contents, chat transcripts, or recall queries on the control plane.

4. Purchases

Payments are processed by Apple. We receive purchase validation results from Apple / StoreKit; we do not receive your full payment card details.

5. Permissions

• Microphone — only when you hold-to-talk; recognition runs on-device.
• Speech recognition — on-device ASR for dictation into chat / recall.
• Files / documents — only files you choose to import.

6. Tracking & analytics

We do not use third-party advertising trackers. App Tracking Transparency tracking is not enabled. Optional analytics SDKs (if any) are disabled by default in current builds.

7. Data retention & deletion

• On-device memories remain until you delete them or uninstall the App.
• You can delete your account from Settings. Account deletion removes control-plane account / entitlement records associated with your user id.
• Uninstalling the App removes local memories from that device.

8. Children

The App is not directed to children under 13 (or the minimum age required in your region). Do not use the App if you are under that age.

9. International users

Control-plane services may be hosted in regions different from yours. By using account features you acknowledge that entitlement metadata may be processed where our servers operate.

10. Changes

We may update this policy. The “Last updated” date will change when we do. Continued use after an update means you accept the revised policy.

11. Contact

Questions about privacy: privacy@extrabrain.app
Support: https://extrabrain.app/support