Carbon Notes vs ZenFlow AI Markdown Editor
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Carbon Notes
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Carbon is a markdown-focused note-taking app designed for seamless organization of your ideas, tasks, and knowledge. With powerful markdown support and AI-powered tools, Carbon transforms how you capture and develop your thoughts. Unlock one-tap AI for your notes: Use our keys for $20/mo or use your OpenAI, Claude, or Open Router API keys for $5 (one-time unlock) This app supports iPhone, iPad, and Mac OS KEY FEATURES: - Powerful Markdown Support: Write and format your notes with intuitive markdown syntax. Carbon provides real-time preview and styling for a distraction-free writing experience. - AI-Powered Assistance: Leverage AI to enhance your writing with smart tools that can summarize, expand, polish, translate, and transform your content with just a tap. - Intelligent Tagging System: Organize your notes with an advanced tagging system that automatically recognizes hashtags in your content and creates hierarchical tag structures. - Robust Search: Find exactly what you need with our powerful search engine that indexes note content, titles, and tags for lightning-fast results. - Complete Privacy: Your data belongs to you. Carbon supports end-to-end encryption to protect your sensitive notes with military-grade security. - Seamless iCloud Sync: Access your notes across all your Apple devices with reliable CloudKit synchronization that works silently in the background. - Clean, Customizable Interface: Focus on your writing with a distraction-free interface featuring multiple themes and typography options. - Export Flexibility: Share your notes in multiple formats including Markdown, Text, HTML, PDF, and JSON. - Deep Organization: Create a personalized knowledge base with nested tags, favorites, smart collections, and custom filters. - Distraction-Free Writing: Enter a focused writing state with Carbon's minimal interface and keyboard shortcuts. - Markdown Import/Export: Easily bring in existing markdown files or export your notes for use in other applications. - Version History: Never lose important changes with automatic versioning of your notes. - Customizable Themes: Choose from light and dark themes, or customize colors to match your style. - Secure Biometric Authentication: Protect your notes with Face ID, Touch ID, or passcode authentication. CARBON IS PERFECT FOR: - Writers who need a clean environment for drafting and organizing their work - Students taking lecture notes and organizing course materials - Developers documenting projects and code snippets - Researchers collecting and connecting ideas - Professionals managing meeting notes and action items - Anyone looking to build a personal knowledge management system Carbon strikes the perfect balance between simplicity and power. The interface stays out of your way when you want to write, while offering powerful tools when you need them. Advanced features include batch operations, smart lists, custom AI prompts, note encryption, advanced search filters, and multiple export options to fit into any workflow. Your data is yours - Carbon is designed with privacy at its core. Your notes are stored locally and can be optionally encrypted and synced via iCloud. We never collect your notes or personal information. Whether you're capturing quick thoughts, writing detailed documents, or building a complete knowledge base, Carbon provides the tools you need to organize your digital life. Download Carbon today and experience the perfect balance of simplicity, power, and privacy in note-taking. PREMIUM FEATURES (available via subscription or one-time purchase): - AI-powered writing responses - OpenAI key support - Claude key support - Open Router key support Carbon respects your privacy and does not collect personal data or tracking information. Terms and Conditions: https://basicarcana.com/apps/carbon/legal Privacy Policy: https://basicarcana.com/apps/carbon/privacy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
ZenFlow AI Markdown Editor
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ZenFlow AI is a minimalist Markdown editor with an invisible AI editor built in. Write without distraction, keep your files local, and call Ghost AI only when you want a careful second look at your sentences. WRITE WITHOUT DISTRACTION A quiet, borderless editor built around plain text and Markdown. Focus mode fades everything except the sentence you are writing, and typewriter scrolling keeps your eyes where your words are. No ribbons, no formatting panic. GHOST AI, ONLY WHEN YOU ASK Select a sentence and ask Ghost AI to polish, rewrite, expand, check grammar, or adjust tone. Suggestions appear as a clear before-and-after diff, so you compare, accept, or reject. Your voice stays yours. NEW: THREE WAYS TO START A blank page now offers Journal, Inspiration, and Daily Plan starters, so you can begin writing with a single tap. You can also create a document from scratch or import an existing Markdown file. FIND THINGS FASTER Recently edited documents are one tap away on the home screen, and when a search returns nothing, one tap clears every filter. YOUR FILES STAY YOURS Documents are stored locally as Markdown, so you can write offline and keep full ownership of your work. iCloud sync keeps your library consistent across your Apple devices, with recent changes making syncing faster and more reliable. ORGANIZE WITHOUT THE OVERHEAD Folders, smart tags, and lightweight links keep long drafts, quick notes, research, and daily journal entries together, without turning writing into database maintenance. BRING YOUR OWN AI KEY Use your own token with Ghost AI. Add your key in Settings and your writing assistant runs on your own account, your own limits, and your own data terms. EXPORT ANYWHERE Export plain Markdown and text for free, or unlock polished PDF and DOCX export with typographic themes through ZenPro. ZENPRO ZenPro is a one-time purchase, not a subscription. A single payment unlocks Ghost AI and advanced export. PERFECT FOR Writers, bloggers, students, researchers, journalists, novelists, and anyone who journals daily and wants fewer distractions and better editing. Contact: support@100ideas.net Apple Standard End User License Agreement (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is update cadence: ZenFlow AI Markdown Editor at every 8 days against Carbon Notes's every 3 weeks. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Carbon Notes sells 2 in-app purchases, starting at $19.99 per month and ZenFlow AI Markdown Editor sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
Carbon Notes ships an update every 3 weeks, ZenFlow AI Markdown Editor every 8 days. The most recent releases landed on September 29, 2026 and October 8, 2026 respectively.
| Parameter | Carbon Notes | ZenFlow AI Markdown Editor |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks | Every 8 days โ better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.6 | 16.6 โ better |
| Further details โ not scored | ||
| Size | 12 MB | 69 MB |
| Age rating | 4+ | 12+ |
| Developer | YMMV | ๅไบฎ ๅ |
In-app purchases
Carbon Notes
- Pro$19.991 Month
- AI Unlock$4.99
ZenFlow AI Markdown Editor
- ZenFlow Pro Monthly$1.991 Month
- ZenFlow Pro Annual$5.991 Year
- ZenFlow Pro$8.99
Questions
Is Carbon Notes free?
Is ZenFlow AI Markdown Editor free?
Do Carbon Notes or ZenFlow AI Markdown Editor have ads?
Which is updated more often, Carbon Notes or ZenFlow AI Markdown Editor?
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