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 | 4.5★ (2.7K) | No | No | Aug 2026 |
| 2 |  | Free | — | No | No | May 2026 |
| 3 |  | Free | — | No | No | Jul 2026 |
| 4 |  | Free | — | No | No | May 2026 |
| 5 |  | $8.99 | 4.7★ (22) | No | No | Aug 2026 |
| 6 |  | Free | 5.0★ (2) | No | No | May 2026 |
| 7 |  | Free | — | No | No | May 2026 |
| 8 |  | Free | 4.6★ (149) | No | Yes | Aug 2026 |
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.
Organize and search text documents and web pages with links within a mind map structure. Automatically create mind maps from text, import Wikipedia articles, and export your knowledge base as HTML. Also functions as a flowcharting tool.
Organize your thoughts and information with a personal knowledge base. Save web pages, highlight text, and sync across devices. Create questions and link answers to build a comprehensive understanding of any topic.
This AI-powered tool helps you manage and organize your personal knowledge by collecting digital content from various online sources. It uses AI to extract insights, answer your questions, and provide AI-driven recaps to stimulate learning and understanding.
This app acts as an AI-powered knowledge hub, allowing users to capture, manage, learn from, and create knowledge across various formats. It uses AI agents to organize content, answer questions, and facilitate voice-driven writing and content creation.
Embark on an exciting adventure to master multiplication through over 20 engaging games. Designed by experts, this app helps children develop a deep understanding of times tables and practice them in various contexts.
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.
This app provides a private, offline space to store and organize information, including images, directly on your device. View your stored data like a social media feed, making it ideal for personal notes, revision, or professional record-keeping.
