Lucid: Second Brain
Offline PARA notes, no account
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Ever had a great idea, written it down, and never found it again?
Notes apps just pile up. All-in-one tools get overwhelming. Lucid sits in between.
■ Catch the 3 seconds it lives
Tap the home screen widget and start typing. Don't pick a type or a place — just get it down.
■ Organize in 5 minutes a day
Swipe through your thoughts and answer one thing: "Where does this go?" No jargon — Projects, Areas, Resources, Archive.
■ Today, only what matters
Open the app and today's tasks come first. Each one done is a small win.
■ Your second brain, in your hand
No account, no login. Every thought stays safe on your iPhone.
Stop losing your best ideas. Let Lucid remember them for you.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
• Fixed a few labels that showed up in Korean on English devices.
• Minor fixes and polish.
The developer, Goo wong Kwon, 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
- Seller
- Goo wong Kwon
- Size
- 2.3 MB
- Category
- Productivity
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English and Korean
- Age Rating
4+
- 4+
- Copyright
- © 2026 Goowong Kwon