Nautilus vs CollaNote
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Nautilus
This app is a research-focused web browser and writing tool for iPad and iPhone. It allows users to read, annotate web pages and PDFs, and use AI for summarization and content generation. The app also supports document creation and organization, syncing across cloud services.
- Web browsing with research tools
- AI-powered page summarization and translation
- Direct annotation on web pages and PDFs
- Export markup as PDF, Word, or Markdown
- Integrated document drafting and organization
- Cloud syncing with Dropbox, Google Drive, and iCloud
- Lecture and interview recording with transcripts
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Nautilus is a web browser built for research. Read the web, mark it up, ask AI about what you find, and write up your work without leaving the app, on iPad and iPhone. Students, researchers, journalists, writers and professionals use it to go from first search to finished document in one place. Browse with research tools built in Open pages in tabs, pin the ones you come back to, and keep sites in bookmarks and history. Switch to Reader for a clean page without distractions, or let Reader turn on automatically. Request the desktop version of a site when you need it. Understand any page Ask AI about the page you're reading. Summarize a long article, or translate a page into your language or into English, then switch back to the original at any time. Circle it with Magic Lasso Circle a passage, chart or image on a page. Ask AI to explain it, ask your own question, highlight it, or save it as a clip on your Clippings board so your findings stay together. Mark up the web Draw and write directly on web pages. Export a page with your markup as a PDF in A4, Letter or Legal size, or as a Word document, Markdown, RTF, plain text or an image. Read and annotate your sources Open PDFs, papers and reports in tabs beside your web pages. Highlight, write in the margins, add comments, and compare two documents side by side. Fill and sign forms, scan paper pages into PDFs, measure scaled drawings, and hide sensitive text before you share. Write it up Draft in Word documents, RTF, Markdown or plain text. Plan a long paper or book section by section on a Corkboard, keep your sources open next to the draft, take snapshots of earlier versions, and compile everything into one document or ebook. Study Projects gather the readings for each subject in one place. AI help from first idea to final draft Chat through ideas, ask about your own documents, and get explanations. Rewrite, simplify, correct spelling and grammar, change the tone, or translate what you've written. Also in Nautilus Record lectures and interviews and create transcripts. Connect ideas on whiteboards with sticky notes, organize plans in outlines, and work through calculations and charts in Math Notebooks. Your library, safe and in sync Keep documents in folders and notebooks with covers, and find anything with search. Export to PDF, Word, HTML, EPUB and more. Sync with iCloud, Dropbox, Box, Google Drive or WebDAV. Automatic saving, recovery and backups protect your work, and passcodes lock the app or private folders. Formerly Notes Writer Pro Nautilus is the new name of Notes Writer Pro. Your existing PDF notes and outlines open here. Privacy Policy http://www.noteswriter.com/Kairoos_Privacy_Policy.html Terms of Use https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
CollaNote
This powerful note-taking app offers a rich set of tools for writing, PDF markup, and digital planning. Enhance your notes with over 25 pens, handwriting stabilization, and AI assistance. Collaborate in real-time and organize your work with unlimited papers and notebooks.
- 25+ pens and brushes
- Handwriting stabilizer
- PDF import and markup
- Flashcard creation
- Real-time collaboration
- AI-powered tools
- Unlimited papers and notebooks
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CollaNote: Powerful note-taking app packed with a wide range of tools. Note-taking, PDF markup, digital planning, and flashcards - all in one place! BUILT FOR APPLE PENCIL WITH AN ENHANCED WRITING EXPERIENCE: - 25+ different pens and brushes to transform your notes into artwork. - Handwriting stabilizer for beautiful, smooth writing. - Enjoy a calming ASMR note-taking experience. - Infinite Arc Menu available for both Apple Pencil Pro and Apple Pencil Gen 2. IMPORT, MARK-UP, AND EXPORT PDF: - Import and mark up PDFs, PPTs, DOCs, and Images effortlessly. - In-built scanner to digitize your physical documents. - Export notes to PDF and share with ease. POWERFUL TOOLS: - Translation tool to learn new languages, supporting over 90 languages. - Create flashcards with audio and images, or use our extensive library. - Beautiful Planners for tracking tasks, deadlines, and schedules. - Record and sync audio directly within your notes. UNLIMITED PAPERS AND NOTEBOOKS: - Unlimited paper with versatile grids/lines and 150+ colorful templates. - Keep all your notes organized and easily accessible from anywhere. - Automatically back up to iCloud and sync across iOS devices. - Smart Dark Mode for optimal visibility in any lighting. - Password protection for ultimate note security. AI POWERED: - Built-in AI Calculator for complex calculations. - AI drawing tools for perfect shapes. - Get intelligent writing and note-taking assistance. - Generate unique stickers with AI. ENGAGING CREATIVE COMMUNITY: - Join the Public Room to connect with creators worldwide. - Real-time collaboration function (unlimited participants). CollaNote's journey began with a student at Hamburg University, who now leads a dedicated team of individuals devoted to delivering the finest digital paper experience. We extend our heartfelt gratitude to our users for their unwavering support since the early days of CollaNote. Download CollaNote now to discover even more surprises!
Screenshots
Verdict
Nautilus and CollaNote both sit at 4.6 stars, but that hides the real split: 74% of CollaNote's written reviews are positive against 48% of Nautilus's. CollaNote also leads on monetization model (free vs freemium) and update cadence (every 6 days vs fortnightly). On price, rating, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Nautilus sells 3 in-app purchases, starting at $3.99 per month and CollaNote sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.6 for Nautilus against 4.7 for CollaNote. Both are backed by a comparable volume of ratings — 3.2K and 15K respectively. Written reviews are what separate them: 48% of Nautilus's written reviews are positive against 74% of CollaNote's.
Nautilus ships an update fortnightly, CollaNote every 6 days. The most recent releases landed on November 6, 2026 and November 8, 2026 respectively.
| Parameter | Nautilus | CollaNote |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (3.2K ratings) | 4.7 (15K ratings) — better |
| Positive reviews | 48.3% of reviews | 73.6% of reviews — better |
| Number of ratings | 3.2K | 15K — better |
| Update frequency | Fortnightly | Every 6 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | Free — better |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 26.0 | 18.6 — better |
| Further details — not scored | ||
| Size | 502 MB | 229 MB |
| Age rating | 17+ | 4+ |
| Developer | Kairoos Solutions SL | Zauberberg Lab Company Limited |
Customer experience
Nautilus
CollaNote
User reviews
Nautilus
From 3.2K App Store ratingsWhat we love
- 🚀 Excellent note-taking app
- 📁 Great folder organization
- 🎨 Customizable notebook covers
- 🔍 Useful PDF annotation tools
- 🤖 Impressive AI capabilities
Room to improve
- 🐛 Frequent crashes and bugs
- 🔄 Sync and file transfer issues
- 🕰️ Slow performance and lag
- 🔒 Poor customer support
- 💰 Misleading upgrade pricing
CollaNote
From 15K App Store ratingsWhat we love
- 🚀 Very good writing app
- 🚀 Great app and easy to navigate
- 🚀 Excellent note taking app
- 👍 Amazing free note taking app
- 👍 Fantastic for teaching
Room to improve
- 🐛 Glitching, crashing, and issues with writing tools
- 🐛 Inconsistent performance and bugs
- 🐛 Issues with PDF annotations and exports
- 🐛 Problems with organization and navigation
- 🐛 Frequent crashes and data loss
Bugs and requests
Nautilus
Reported bugs
5 issues- Notes randomly disappearing
- Formatting issues with text and images
- Unreliable audio recording and playback
- Compatibility problems with newer iOS versions
- Inability to transfer files between free and pro versions
Requested features
5 requests- Handwriting recognition
- Improved eraser and shape tools
- Customizable keyboard and toolbar
- Better integration with cloud storage
- Ability to rotate and resize images
CollaNote
Reported bugs
6 issues- Pen and eraser issues after updates
- Freezing and crashing when deleting or moving notes
- Inconsistent behavior of favorite pen settings
- Incompatibility with older devices
- Login screen freezes
Show 1 moreShow fewer
- Random deletion of notes and files
Requested features
12 requests- Add landscape mode support
- Improve text editing and formatting
- Enhance organization with nested folders
- Implement better backup and sync options
- Add more pen/pencil customization
Show 7 moreShow fewer
- Improve collaboration and sharing features
- Introduce a zoom window and auto-advance function
- Add more paper style options
- Implement undo/redo functionality
- Allow resizing and manipulating of selected content
- Provide a dark mode option
- Add advanced analytics and dashboard
In-app purchases
Nautilus
- Nautilus Unlock All and AI3 Days trial$3.991 Month
- Nautilus Unlock All and AI3 Days trial$14.991 Year
- Nautilus Pro Lifetime$14.99
CollaNote
- Lifetime Premium Loyal Users$6.95
- Premium: Time Limited Sale$6.95
- Lifetime Premium Welcome Offer$9.69
Show 1 moreShow fewer
- Lifetime Premium$13.90





