Lumina: your second brain
Capture. Connect. Remember.
Free · In-App Purchases · Designed for iPad. Not verified for macOS.
Lumina – Your Ideas, Connected
Lumina is a private, local-first second brain that helps you capture your thoughts, connect ideas, and rediscover everything you’ve learned — instantly.
All processing happens on your device. Your data stays yours.
Think. Capture. Connect.
Write notes, record voice memos, scan text, or import information — Lumina automatically identifies names, concepts, and entities and links them together for you.
Built-in offline AI lets you search and understand your knowledge base with natural language, without sending anything to the cloud.
A Smarter Way to Remember
Entities & Connections – Lumina detects people, places, topics, and ideas across your notes and maps how they relate.
AI Search (Offline) – Ask questions in your own words and get accurate answers powered by a local LLM.
Voice & OCR Capture – Transcribe audio or extract text from images quickly and privately.
Knowledge Graph – Visualize how your notes and ideas connect. Explore your mind like a map.
Simple by Design – No folders, no friction. Just capture and let Lumina organize.
Private & Local – Notes, embeddings, AI models — everything stays securely on your device.
Optional iCloud Backup – Encrypted, effortless backups to restore your knowledge on a new device.
Export Anytime – Your data is yours. Export it in an open format whenever you want.
Built for People Who Think Better with Connections
Lumina is perfect for:
Students & lifelong learners
Writers, researchers, creators
Professionals with lots of ideas
Anyone who wants a simple, powerful second brain
People who value privacy above everything else
No subscriptions. No ads. No tracking.
Lumina is free to use. If you enjoy it, you can support development directly from the app.
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
Fixed a crash when going to background while editing a note.
Added a new feature to pin notes that are long term.
Added a timeline view in the entity page.
The developer, Rodrigo Uroz, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Provider
- Rodrigo Uroz
- Size
- 1.7 GB
- Category
- Productivity
- Compatibility
Requires iOS 18.6 or later.
- iPhone
Requires iOS 18.6 or later. - iPad
Requires iPadOS 18.6 or later. - Mac
Requires macOS 15.6 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.6 or later.
- iPhone
- Languages
- English and Spanish
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Small Tip USD 3.99
- Medium Tip USD 9.99
- Large Tip USD 22.99
- Copyright
- © Rodrigo Uroz - 2025