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Screenshots

  • Lucid: Second Brain screenshot 1
  • Lucid: Second Brain screenshot 2
  • Lucid: Second Brain screenshot 3
  • Lucid: Second Brain screenshot 4

About Lucid: Second Brain

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.

What’s new

Version 1.1.2 · Updated June 25, 2026

• Fixed a few labels that showed up in Korean on English devices. • Minor fixes and polish.

App privacy

The developer, Goo wong Kwon, reported these privacy practices to Apple.

Data Not Collected

The developer does not collect any data from this app.

Alternatives to Lucid: Second Brain

Looking for apps like Lucid: Second Brain? Here are 6 similar apps on the App Store. The highest rated is Clarity Vault (5.0/5), and all 6 are free to download.

Lucid: Second Brain vs. alternatives
App Rating Price Last updated
Lucid: Second Brain – Free June 25, 2026
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Clarity Vault 5.0 / 5 (1) Free May 31, 2026
Tempo: Calm To-Do & Focus – Free Jun 23, 2026
CutieDo 5.0 / 5 (1) Free Jan 24, 2026
ReadyList - Daily Checklist – Free Sep 21, 2026