250+ iOS apps curated and reviewed
Out of 250+ knowledge base apps on iOS, 18 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 2.0★ (1) | No | Yes | May 2026 | |
| 2 |  | Free | — | No | No | May 2026 | |
| 3 |  | Free | 4.5★ (2.7K) | No | No | Sep 2026 | |
| 4 |  | $8.99 | 4.7★ (24) | No | No | Sep 2026 | |
| 5 |  | Free | — | No | No | Jul 2026 | |
| 6 |  | Free | 5.0★ (2) | No | No | May 2026 | |
| 7 |  | Free | — | No | No | May 2026 | |
| 8 |  | Free | — | No | No | May 2026 |
Capture and organize all your ideas, facts, and details effortlessly. This app acts as a personal database, allowing you to store various types of information and retrieve it quickly with a powerful search system. Customize your data input with templates for efficient management.
Organize your thoughts and ideas with a powerful knowledge base that utilizes local Markdown files. This app acts as your personal second brain, accessible on your mobile device for seamless note-taking and idea connection.
