Socratus
AI Second Brain for Your Notes
Free · In‑App Purchases
Ask your notes anything. Socratus answers from your own files, searches by meaning, and maps how your ideas connect. Private AI that runs on your device.
Socratus is a Personal knowledge management system that understands your notes, not just stores them. Ask questions, search by meaning, and see how your ideas connect, with AI that runs privately on your device. Think of it as your second brain, local-first and always under your control.
FEATURES
AI chat that answers from your own notes, with sources shown
Private on-device AI that works offline
Semantic and exact-word search with match scoring
Interactive knowledge graph of related notes, exportable as an image
Related notes ranked by similarity, with related-word tracing
Distraction-free editor built for long-form thinking
Markdown support and syntax highlighting
Dictation, find and replace, adjustable font size, and one-tap save
Structured tables with calculations and charts
Daily scratchpad with Today's Notes
Folders, a clear file tree, and recent files
Import and read documents
File-level encryption with QEncrypt
Portable plain-text files with no lock-in
Passwordless sign-in with a secure link
WHO IT'S FOR Researchers, writers, students, developers, privacy-minded professionals, and anyone building a personal knowledge management system.
PRICING Free for personal use. Professional and Enterprise licenses for commercial work.
Turn your knowledge into a living system that grows with you.
Socratus is a product of FiveRivers Technologies.
Terms of Use (EULA): https://socratus.app/terms-of-service/
Privacy Policy: https://socratus.app/privacy-statement/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Bugs fixed and performance enhanced.
The developer, Pepper, 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 Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
Data Linked to You
The following data may be collected and linked to your identity:
- Purchases
- Contact Info
- Identifiers
- Usage Data
- Diagnostics
- Other Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Five Rivers Technologies (Pvt.) Ltd.
- Size
- 155.1 MB
- Category
- Productivity
- Compatibility
Requires iOS 16.0 or later.
- iPhone
Requires iOS 16.0 or later. - Mac
Requires macOS 14.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Pro Yearly $99.99
- Pro Monthly $9.99
- Pro Yearly $49.99
- Pro Monthly $4.99
- Copyright
- © 2026 Fiveriverstech