Marten: Markdown Code Notes
Dev notebook, snippets & sync
Free
Markdown notes with code highlighting, a Face ID-locked secrets vault, tags, and fast search. Synced across iPhone, iPad, and Mac.
Marten is a clean, distraction-free note app built for developers.
Write in Markdown with syntax-highlighted code blocks, then turn any note into a project with just the tabs you need. Keep a plain note, or add API keys, secrets, passwords, social logins, links, references, and checklists. Each filled tab becomes an item, so one note holds everything about a project.
FEATURES
Markdown editor Fenced code blocks with an olive, editor-style highlight. Toggle a live preview anytime.
Project tabs Note, List, API, Ref, Link, Secret, Password, and Social. Add only the tabs you want with a tap.
Secrets vault Store API keys, passwords, and accounts with masked fields and a quick reveal.
Checklists Reminders-style lists with tap-to-complete items.
Tags and search Organize with #hashtags and find anything instantly with full-text search.
Sync, your way Local-first storage that works offline, with optional cloud sync across your devices. Turn sync on or off whenever you want.
Built for every screen A native app for iPhone, iPad, and Mac, with an adaptive three-column layout on iPad and Mac. Light and dark themes.
Private by design Your notes are yours. No ads, no tracking, and you can delete your account and all data from inside the app at any time.
Marketing URL: https://marten.kodefoundry.com
Privacy Policy URL: https://marten.kodefoundry.com/privacy
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
Polish and fixes:
• Notes now keep your line breaks exactly as you typed them when switching from edit to preview.
• Cleaner social platform picker on Mac, with correctly sized brand icons.
• Tidied note list alignment so titles and dates line up neatly on Mac.
• Small stability and layout improvements.
The developer, joseph hamawi, 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
- User Content
- Identifiers
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Provider
- joseph hamawi
- Size
- 15.5 MB
- Category
- Productivity
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Marten