SentryNote
Productivity
Free · In-App Purchases
Secure note-taking with end-to-end encryption, time-limited sharing, and team collaboration. Available on macOS and Web.
SentryNote - Secure Note-Taking for macOS and iOS
Transform your note-taking experience with SentryNote, the most secure and feature-rich note-taking app for macOS. Built with privacy-first principles, SentryNote ensures your thoughts, ideas, and sensitive information remain protected while staying organized and accessible across all your devices.
Military-Grade Security
End-to-End Encryption: Every note is encrypted locally before syncing
Zero-Knowledge Architecture: We can't read your notes - only you can
Local-First Security: Your data stays on your device until you choose to share
Advanced Encryption: Industry-standard AES-256 encryption for maximum protection
Time-Limited Sharing
Self-Destructing Notes: Set expiration times for sensitive information
Temporary Access: Share notes that automatically disappear after viewing
Secure Links: Generate encrypted sharing links with custom expiration
View Tracking: See when your shared notes are accessed
Team Collaboration
Secure Team Workspaces: Collaborate without compromising security
Role-Based Access: Control who can view, edit, or share specific notes
Encrypted Team Sharing: All team communications remain encrypted
Real-Time Sync: Changes sync instantly across all team members
Powerful Note-Taking
Rich Text Editor: Full markdown support with live preview
Smart Organization: Folders, tags, and searchable content
Cross-Platform Sync: Access your notes on macOS, iOS, and Web
Offline Access: Work without internet - sync when connected
Universal Access
macOS Native App: Optimized for Mac with native performance
iOS Companion: Full-featured mobile app for iPhone and iPad
Web Application: Access your notes from any browser
Seamless Sync: Your notes sync instantly across all platforms
Privacy-First Design
No Data Mining: We don't collect or sell your personal information
Transparent Security: Open about our encryption methods
Local Processing: Sensitive operations happen on your device
GDPR Compliant: Full compliance with privacy regulations
Perfect for:
Professionals handling sensitive information
Teams requiring secure collaboration
Journalists and researchers
Anyone who values privacy and security
Why Choose SentryNote?
Unlike other note-taking apps that store your data in plain text, SentryNote encrypts everything locally before it ever leaves your device. Our time-limited sharing feature ensures sensitive information doesn't linger in others' hands, while our team collaboration tools let you work securely with colleagues without compromising privacy.
Get Started Today
Download SentryNote and experience the future of secure note-taking. Your thoughts deserve the highest level of protection, available wherever you are.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Atomar, LLC, 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 Linked to You
The following data may be collected and linked to your identity:
- Contact Info
- Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Contact Info
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Atomar, LLC
- Size
- 35.4 MB
- Category
- Productivity
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPad
Requires iPadOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 11.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- SentryNote Basic $49.99
- Copyright
- © 2026 Atomar, LLC