Privacy Policy

Our commitment

We do not sell your personal information. We do not show ads and do not use advertising SDKs. BrainSync is built for private notes and reminders — not for advertising profiles.

What we do not collect

BrainSync does not require an email or password. Sign-in uses an anonymous Firebase ID created on your device. We do not collect contacts, payment cards, or location for core features. The current build does not use Firebase Analytics, Crashlytics, or AdMob.

Permissions we use

• Internet — Sync memories and attachments with Firebase.
• Microphone — Optional voice capture via the system speech recognizer. Spoken audio is processed by the device/Google speech service to produce text; BrainSync stores the resulting text as a memory, not a raw audio recording.
• Camera — Optional OCR capture. Text recognition runs on-device with ML Kit; only the extracted text (and any image you choose to attach) is saved.
• Notifications — Reminder and alarm alerts when memories are due.
• Exact alarms, wake lock, vibrate & boot completed — Ring reminders on time and re-arm them after reboot.
• Full-screen intent — Show the alarm screen over the lock screen when allowed.
• Foreground service (media playback) — Keep reminder alarm audio playing with a visible notification.
• Battery optimization exemption (optional) — Improve reliable reminder delivery on some devices when you allow it.
• Biometric / device credential (optional) — App Lock uses your existing screen lock or biometrics locally. Biometric templates stay on the device and are not uploaded.

Data on your device

A local Room cache of your memories, SharedPreferences (settings such as quiet hours, app lock toggle, onboarding, snooze helpers, and widget state), and alarm/session helpers are stored on-device. Clearing app data or uninstalling removes this local information.

Android backup may copy app data if device backup is enabled. Sensitive local settings can therefore transfer with your Android backup unless you clear app data or disable backup for the app.

Cloud services (Google Firebase)

BrainSync uses Google Firebase Auth (anonymous ID), Realtime Database, and Cloud Storage. Processor: Google LLC (Firebase / Google Play services).

• Anonymous account ID — Authorizes your private data path so only your signed-in session can read and write your memories.
• Memories in Realtime Database — Note text, category, tags, folder, priority, reminder times, recurrence, trash/archive flags, attachment metadata, and related fields you save in the app.
• Attachments in Cloud Storage — Images or files you attach to a memory, stored under your anonymous user ID.

Export and import in Settings let you download or restore a JSON copy of your memories on the device. Calendar export creates an .ics file you choose to save.

Uninstalling the app removes local data on the device. It does not automatically delete cloud documents or storage objects tied to your anonymous ID. Use Delete all memories / Empty trash in Settings when you want cloud data removed from the app’s database paths, and remove attachments through normal memory deletion when applicable.

Children’s privacy

BrainSync is for general audiences and is not directed at children under 13. We do not knowingly collect personal information from children.

Your choices

You control microphone, camera, notification, and related permissions in Android Settings. You can turn off App Lock, quiet hours, or reminders in BrainSync Settings, export your data, move items to trash, empty trash, or delete all memories.

Revoking permissions, clearing app data, or uninstalling removes local data. Cloud retention for your anonymous ID is described in Cloud services above.

Contact

BrainSync is developed by App Coder Hub. For privacy questions, reach out through the BrainSync listing on Google Play.

See also our Terms of Use.