---
title: "Notesnook: Private note taking — App Overview"
url: https://marlvel.ai/intel-report/productivity/notesnook-private-note-taking
category: Productivity
developer: Streetwriters LLC
platforms: ios
rating: 4.7 (579 ratings)
pricing: freemium
report_level: overview
generated: 2026-04-18
---

<!-- SECTION: Key Insight -->
> **Key Insight:** Notesnook offers a high-security, encrypted note-taking experience, though some users report occasional synchronization reliability issues.

<!-- SECTION: Quick Facts -->
| Metric | Value |
|--------|-------|
| Category | Productivity |
| Rating | 4.7 ★ (579) |
| Pricing | freemium |
| Platforms | iOS |
| Latest Version (iOS) | 3.3.19 |
| Developer | Streetwriters LLC |

<!-- SECTION: Summary -->
## What is Notesnook: Private note taking?

Notesnook is an open-source, cross-platform note-taking application designed for users prioritizing data privacy. It distinguishes itself by utilizing XChaCha20-Poly1305 and Argon2 encryption algorithms to ensure all notes are encrypted by default.

<!-- SECTION: Key Features -->
## Key Features

- **Zero-Knowledge Encryption**: Uses XChaCha20-Poly1305 and Argon2 algorithms to ensure notes are encrypted by default without requiring user configuration.
- **Cross-Platform Sync**: Enables seamless synchronization of notes across computer, tablet, and mobile devices.
- **Open Source Architecture**: Provides transparency through an open-source codebase for users concerned with data security.
- **Rich Formatting**: Supports advanced note organization features including tables and flexible formatting options.

<!-- SECTION: Target Audience -->
## Who is it for?

Privacy-conscious individuals and professionals seeking a secure, cross-platform alternative to mainstream note-taking apps.

<!-- SECTION: Links -->
## Links

- [App Store](https://apps.apple.com/us/app/notesnook-private-note-taking/id1544027013?uo=4)
- [Full Intelligence Report](https://marlvel.ai/intel-report/productivity/notesnook-private-note-taking)

---
*This is an overview report. Sentiment analysis, competitive landscape, and SWOT analysis are available in the [full intelligence report](https://marlvel.ai/intel-report/productivity/notesnook-private-note-taking).*
*Generated by [Marlvel.ai](https://marlvel.ai) — Independent app intelligence.*