Second Brain app icon

Apps Like Second Brain for iPhone and iPad

Organize thoughts and manage ideas

Organize thoughts, ideas, and memories with note-taking and tagging. Create to-do lists and journal entries. Track workout progress and business ideas. Search and categorize content for easy retrieval. Sync across devices for consistent access.

by Simon Jakobsson★ 5.01 ratingsProductivity$3.99Data updated 2026-09-06

Ranked alternatives

Showing 601–620 of 1,000 ranked alternatives.

  1. Simple Memo – Checklist app icon

    Simple Memo – Checklist

    Sota Yamamoto

    Manage tasks with a

    Manage daily tasks with a . Swipe between up to 10 pages. Reorder, delete, and edit titles using intuitive controls. Add and organize quick thoughts or shopping lists in a single-screen interface.

    ★ 0.00 ratingsProductivityFreeData updated 2026-09-06
  2. Kase₄: Your Personal Database app icon

    Kase₄: Your Personal Database

    Kenneth Wong

    Store, organize, and link data anywhere

    Create and manage custom databases to track information. Organize data into tables with relational links. Add notes, set reminders, and secure data with encryption. Sync across devices and export data in various formats.

    ★ 5.02 ratingsProductivity$4.99Data updated 2026-09-06
  3. HiMemo app icon

    HiMemo

    Hiroyuki Kawai

    ★ 0.00 ratingsProductivityFreeData updated 2026-09-06

How we rank alternatives

Apps are ranked by functional similarity, category fit, rating confidence, and popularity.