Report updated Apr 18, 2026

Overview · Full Intel report in progress

Notesnook: Private note taking is an established productivity app that is free with in-app purchases. With a 4.7/5 rating from 579 reviews, it shows polarized user reception.

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.

Current Momentum

v3.3 · 1w ago

Intense

Last updated 11d ago. 5 versions tracked.

Competition

Rivals identification in progress

7-Day Rank Pulse 🇺🇸

Productivity

No ranking data

Rating Pulse 🇺🇸

What makes this app unique?

What Does It Look Like?

What Are The Key Features?

Zero-Knowledge EncryptionStandard

Uses XChaCha20-Poly1305 and Argon2 algorithms to ensure notes are encrypted by default without requiring user configuration.

Cross-Platform SyncStandard

Enables seamless synchronization of notes across computer, tablet, and mobile devices.

Open Source ArchitectureStandard

Provides transparency through an open-source codebase for users concerned with data security.

Rich FormattingStandard

Supports advanced note organization features including tables and flexible formatting options.

How much does it cost?

Freemium

Who Built It?

Streetwriters LLC app icon 1
Streetwriters LLC app icon 2
Streetwriters LLC app icon 3
Streetwriters LLC app icon 4

Streetwriters

(40)

Providing privacy-focused productivity tools for users who prioritize data security. Building open-source alternatives to mainstream note-taking and writing software.

Portfolio

3

Apps

Free 2
Productivity50%
Book50%

Explore the full Streetwriters report

Portfolio breakdown, audience, momentum, and every app published by Streetwriters.

Go deeper

Analysis in progress, available soon

What do users think recently?

Analysis in progress, available soon

View the full user-sentiment analysis

Mood gauge, ratings & review-volume history, every praise / complaint / request, and sentiment over time.

Go deeper

Analysis in progress, available soon

What is the competitive landscape for Notesnook: Private note taking?

How's The Productivity Market?

How does it evolve in the Productivity market?

Rank progression

5 active rankings tracked — 30-day window

Strategic analysis coming soon

SWOT, key takeaways & outlook

The outtake for Notesnook: Private note taking

Key Takeaways

Notesnook offers a high-security, encrypted note-taking experience, though some users report occasional synchronization reliability issues.

Where Is It Heading?

Trend analysis

Available very soon

Disclosure: Independent intel to help mobile builders succeed.

AI-powered analysis with editorial review, built from publicly available sources. Marlvel.ai is not affiliated with, endorsed by, or sponsored by Notesnook: Private note taking, its developer, the app publisher, Apple, or Google Play. All trademarks, logos, and screenshots referenced remain the property of their respective owners.

Cite this report

Marlvel.ai. “Notesnook: Private note taking Intelligence Report.” Updated Apr 18, 2026. https://marlvel.ai/apps/notesnook-private-note-taking

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