# Socratus — AI Second Brain for Your Notes

> AI Second Brain for Your Notes (iPhone/iPad app by Pepper.)

- Source: https://appshunter.io/ios/app/socratus/id6775861332 (this page in markdown: same URL + `.md`)
- Developer: [Pepper](https://appshunter.io/developer/332209700)
- Category: Productivity, Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 16.0 · 141 MB
- Languages: American English
- Released: 2026-08-23
- Data updated: 2026-09-15
- User reviews in markdown: https://appshunter.io/ios/app/socratus/id6775861332/reviews.md

## What is Socratus?

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/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Pro Monthly | $4.99 | per month |
| Pro Yearly | $49.99 | per year |
| Pro Monthly | $9.99 | per month |
| Pro Yearly | $99.99 | per year |



## Version history (last 1 release)

### 1.7.14 — 2026-08-24

No release notes.

## More apps by Pepper

- [QEncrypt](https://appshunter.io/ios/app/qencrypt/id6760531096)

All apps by Pepper: https://appshunter.io/developer/332209700

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-15.*