Privacy Policy

Overview

Lumina is a privacy-first personal knowledge management app for iOS. We believe your notes, thoughts, and ideas belong to you—and only you. This privacy policy explains how Lumina handles your data.

The short version: All AI processing happens on your device. We don't collect, store, or transmit your personal data to our servers. Your notes never leave your device unless you explicitly choose to back them up to your personal iCloud account.

Data Collection and Storage

What Data Is Stored Locally on Your Device

Lumina stores the following data locally on your iPhone or iPad:

• Notes: All text notes, voice transcriptions, and captured text from images
• Entities: Automatically extracted people, places, organizations, and projects from your notes
• Metadata: Creation dates, modification dates, note view counts, and language information
• AI Models: Downloaded AI models for voice transcription and text generation (stored in app container)
• Search Indexes: Local search indexes to enable fast search across your notes
• App Preferences: Your settings choices, theme preferences, and selected AI model

All of this data is stored exclusively on your device using iOS standard storage mechanisms with encryption at rest provided by iOS.

What Data We Do NOT Collect

Lumina does not collect, transmit, or store on external servers:

• Your notes or note content
• Voice recordings or transcriptions
• Photos or text captured via camera
• Search queries or search history
• AI-generated answers or responses
• Entity data or knowledge graph information
• Personal information (name, email, phone number, etc.)
• Location data
• Device identifiers for tracking purposes

How Your Data Is Processed

On-Device AI Processing

All artificial intelligence features in Lumina run entirely on your device:

• Voice Transcription: Voice notes are transcribed using on-device speech recognition (Whisper AI). Audio is processed locally and never sent to external servers.
• Text Recognition (OCR): Text captured from images is processed using iOS Vision framework on your device.
• Entity Recognition: People, places, and organizations are identified using on-device CoreML models.
• Semantic Search: Search indexes and vector embeddings are computed on your device using CoreML.
• AI Answers: Question answering uses on-device language models (Llama). Your questions and generated answers never leave your device.
• Knowledge Graph: Connection analysis and graph visualization happen locally on your device.

No cloud processing: Lumina does not use external APIs or cloud services for any AI features.

iCloud Backup (Optional)

How iCloud Backup Works

Lumina offers an optional iCloud backup feature that you can enable in Settings:

• When enabled, Lumina creates encrypted backups of your notes and data
• Backups are stored in your personal iCloud Drive account
• Backups are encrypted by Apple using your iCloud encryption keys
• Only you can access these backups using your Apple ID credentials
• We (Lumina developers) cannot access your iCloud backups
• You can disable iCloud backup at any time in Settings

What's Included in iCloud Backups

If you enable iCloud backup, the following data is backed up to your iCloud Drive:

• All notes and their content
• Entities and entity relationships
• Note metadata (creation dates, modification dates, etc.)
• Search indexes and embeddings

Downloaded AI models are not backed up to iCloud (they can be re-downloaded on any device).

Permissions

What Permissions Lumina Requests and Why

Lumina may request the following iOS permissions:

Microphone Access

Why: Required for recording voice notes
When: Only requested when you tap the voice recording button
Processing: Audio is processed on-device for transcription. Voice recordings are not stored—only the transcribed text is saved.

Camera Access

Why: Required for capturing text from images using Live Text feature
When: Only requested when you tap the camera capture button
Processing: Images are processed on-device for text recognition. Original photos are not stored unless you explicitly save them.

Photo Library Access

Why: Optional, for capturing text from existing photos in your library
When: Only requested if you choose to capture text from an existing photo
Processing: Selected photos are processed on-device for text recognition.

All permissions are optional. If you deny a permission, you can still use Lumina—you just won't be able to use features that require that specific permission.

Third-Party Services

App Store and Apple Services

Lumina is distributed through the Apple App Store. Apple may collect data about app downloads and in-app purchases according to their privacy policy: https://www.apple.com/legal/privacy/

In-App Purchases

Lumina offers optional supporter tiers (tips) as in-app purchases. These purchases are processed by Apple. We receive only anonymized purchase receipts and do not collect any payment information.

Crash Reporting (Optional)

Lumina uses Sentry for optional crash reporting to help us fix bugs and improve stability:

• What's collected: Crash reports, error logs, device model, iOS version, app version
• What's NOT collected: Your notes, note content, search queries, or any personal data
• Purpose: To identify and fix bugs that cause the app to crash
• Opt-out: You can disable crash reporting in iOS Settings → Privacy & Security → Analytics & Improvements → Share iPhone Analytics

Sentry's privacy policy: https://sentry.io/privacy/

Data Retention and Deletion

How Long Is Data Kept

All data is stored locally on your device indefinitely until you choose to delete it. We do not have access to your data and cannot delete it remotely.

How to Delete Your Data

You have complete control over your data:

• Delete individual notes: Swipe left on any note and tap Delete
• Delete entities: Tap any entity, then tap Delete
• Delete all app data: Uninstall Lumina from your device (Settings → General → iPhone Storage → Lumina → Delete App)
• Delete iCloud backups: Disable iCloud backup in Lumina settings, then delete backup files from iCloud Drive manually

Data Sharing and Export

When You Choose to Export Data

Lumina includes export features that let you extract your data:

• You can create manual backup files and share them via AirDrop, email, or save to Files
• When you use these export features, you control where the data goes
• We recommend treating exported backup files as sensitive data

We Never Share Your Data

Lumina does not share, sell, rent, or trade your data with third parties. Since we don't collect your data, there's nothing to share.

Children's Privacy

Lumina does not knowingly collect personal information from children under 13. Since all processing happens on-device and we don't collect user data, the app can be used by people of all ages. Parents should supervise children's use of the app as with any iOS application.

International Users

Lumina works entirely on your device, regardless of your location. Since we don't transmit your data to servers, there are no international data transfer concerns. All data stays on your device or optionally in your personal iCloud account (subject to Apple's data residency policies).

Changes to This Privacy Policy

We may update this privacy policy from time to time. When we do, we will:

• Update the "Last Updated" date at the top of this page
• Notify you via an update to the app if changes are significant
• Continue to honor our core privacy commitment: your data stays on your device

You can always find the latest version of this privacy policy at: app.lumina.rodrigouroz.com/privacy.html

Contact Us

If you have questions or concerns about this privacy policy or how Lumina handles data, please contact us:

Email: rodrigouroz@gmail.com

We'll respond to privacy inquiries within 48 hours.

Your Privacy Rights

Because all your data is stored locally on your device and we don't collect personal information, you have complete control:

• Right to Access: All your data is accessible directly in the app
• Right to Export: You can export your data anytime via Settings → Backup & Data
• Right to Delete: You can delete any or all data directly in the app
• Right to Opt-Out: Since we don't collect data, there's nothing to opt out of
• Right to Data Portability: Export features let you move your data anywhere