# Nautilus: Web, Word, Annotate — Web browser, PDF, AI Assistant > Research browser, PDF annotator, AI assistant, and writing tool for students and professionals. (iPhone/iPad app by Kairoos Solutions SL.) - Source: https://appshunter.io/ios/app/nautilus-web-word-annotate/id1422480068 (this page in markdown: same URL + `.md`) - Developer: [Kairoos Solutions SL](https://appshunter.io/developer/978066434) - Category: Utilities, Productivity - Price: Free with in-app purchases (on sale, was $14.99) - Rating: 4.60/5 from 3,239 App Store ratings · 787 written reviews indexed - Age rating: 17+ - Requires: iOS 26.0 · 502 MB - Languages: Australian English, Afrikaans, Albanian, Amharic, Arabic, Armenian, Azerbaijani, Basque, Bangla, Bulgarian and 68 more - Released: 2018-08-15 - Data updated: 2026-11-06 - Monetization: freemium - User reviews in markdown: https://appshunter.io/ios/app/nautilus-web-word-annotate/id1422480068/reviews.md ## What is Nautilus? 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/ ## Key features - 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 ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Nautilus Unlock All and AI | $3.99 | per month | | Nautilus Unlock All and AI | $14.99 | per year | **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Nautilus Pro Lifetime | $14.99 | one-time | ## What do users think of Nautilus? Reviews of Nautilus are mixed: the Utilities app is rated 4.6/5 from 3.2K App Store ratings. What users like most: excellent note-taking app, great folder organization. Top complaints: frequent crashes and bugs, sync and file transfer issues. Summarized from real user reviews. **Pros** - 🚀 Excellent note-taking app - 📁 Great folder organization - 🎨 Customizable notebook covers - 🔍 Useful PDF annotation tools - 🤖 Impressive AI capabilities **Cons** - 🐛 Frequent crashes and bugs - 🔄 Sync and file transfer issues - 🕰️ Slow performance and lag - 🔒 Poor customer support - 💰 Misleading upgrade pricing **Commonly reported bugs** - 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 **Most requested features** - Handwriting recognition - Improved eraser and shape tools - Customizable keyboard and toolbar - Better integration with cloud storage - Ability to rotate and resize images ## Is Nautilus safe? Nautilus: Web, Word, Annotate appears safe based on user ratings. The AppsHunter Safety Score for Nautilus is 92 out of 100. This assessment is based on 3,239 user ratings, with an App Store average of 4.6 out of 5. Of 3,239 App Store ratings, 90.9% point to a safe experience, 2.6% suggest some concerns, and 6.5% point to a risky experience. ## Is Nautilus legit? Nautilus: Web, Word, Annotate appears to be a legitimate app. The AppsHunter Legitimacy Score for Nautilus is 100 out of 100 points across 7 verification signals from App Store and developer data. ## Recent user reviews (10 of 787) All indexed reviews: https://appshunter.io/ios/app/nautilus-web-word-annotate/id1422480068/reviews.md ### 1/5 — Nautilus has ruined Notes Writer Pro *2026-10-19, version 27.0.1* Since Notes Writer Pro has moved to Nautilus, the page curl animation has gone. No option to open pdf in reader mode with shortcut to the content menu etc. The reader mode keeps crashing. They have also removed the option to highlight and turn the pages of larger pdf files in reader mode. It is a shame Nautilus has spoiled the great app!! ### 5/5 — Excelente *2026-09-23* Excelente ### 4/5 — Something need to update *2026-09-19, version 26.5.0* Hello.. Thank you for all the great work you’ve clearly put into your wonderful app. I’d like to suggest adding a feature that allows users to open multiple books, folders, or files at once by selecting all or selecting multiple items. This would save a lot of time, especially when dealing with a large number of files. Thank you for listening to my previous feedback as well—you’ve improved the app so much! 🤎 ### 5/5 — Gets the Job Done *2026-07-28, version 26.5.0* It takes notes easily on the cloud or no. The writing of thie review however is bad. I can ot see what is being written. ### 4/5 — Crashes Automatically *2026-07-24, version 26.5.0* NW Pro crashes(closes) itself automatically ### 1/5 — Dejo de funcionar *2026-07-14, version 26.5.0* He pagado por esta app, y funcionó bien por unos meses, pero ahora ha dejado de funcionar por completo, he probado de todo y simplemente no ha vuelto a funcionar, entro y se queda congelado, no responde ### 1/5 — From Great App to Complete Garbage *2026-05-27, version 26.4.1* Before, NotesWriter used to be a great app for marking up drawings and adding notes. It was simple, reliable, and actually useful. Now it’s a piece of garbage. The app has become frustrating to use. Really disappointing to see such a good app go downhill like this. ### 4/5 — iPad側の環境？ *2026-05-21* 手書きの精度もよく、日本語も検索できるため、便利に使っております！ アップデート後に使いづらくなった以下の2点を元にもどせませんか？ ・何年か前のバージョンであった、ページ送り用のスクロールバーを復活させてほしい。 ・ファイルアプリからPDFを開いた時、空の新規ウィンドウを作成するようになった。（PDF自体は最初のウィンドウに開かれています。不要なウィンドウだらけになって邪魔） 以下は要望です。 ・表示の「左から右へ」などの設定を固定にしたい。 ### 4/5 — 急に大幅改善 *2026-05-14* 前バージョンのこのアプリはひどいバグがあったりしてお世辞にも有料アプリのクオリティにしては不満が残るものだった しかし今回のアップデートでバグ修正にUIの改善を通してかなり使い勝手の良いアプリになった 今のバージョンなら十分満足できる出来だと思う ### 5/5 — Great for construction *2026-05-11, version 26.3.0* Big fan! I’ve been using this app for a few years for construction drawings. Making mark-ups, doing as-builts and filling out forms like time cards, hazard assessments and expense reports. There used to be a feature where when you selected something, there was an option to select more items to group them together. I found that tool VERY useful for overlaying things from one print to another, though it didn’t last long. Would it be possible to get it again? A scaling tool would be great, if possible! ## Frequently asked questions about Nautilus ### What is Nautilus? Nautilus is a research-focused web browser and writing tool designed for iPad and iPhone. It integrates web browsing, PDF annotation, AI assistance, and document creation into a single application. ### What devices does Nautilus support? Nautilus is available for iPhone and iPad devices. ### How much does Nautilus cost? Nautilus is free to download and use. Optional subscription plans offer advanced features like AI capabilities and unlimited access, starting at $3.99 per month or $14.99 per year, with a 3-day free trial. ### Does Nautilus have ads? Nautilus does not contain advertisements. The app is free to use, with optional in-app purchases for premium features. ### What are the subscription options for Nautilus? Nautilus offers subscription plans for 'Unlock All and AI' at $3.99 per month or $14.99 per year. Both plans include a 3-day free trial. ### How often is Nautilus updated? The latest version of Nautilus is 27.0.5, last updated on November 6, 2026. Updates typically include bug fixes and new features to enhance user experience. ### What is the age rating for Nautilus? Nautilus has an age rating of 17+, indicating it may contain content suitable for mature audiences. ### Can I sync my data with other services using Nautilus? Yes, Nautilus supports syncing with iCloud, Dropbox, Box, Google Drive, and WebDAV, ensuring your documents and notes are accessible across devices and platforms. ## Version history (last 5 releases) ### 27.0.5 — 2026-11-06 - Fixed several bugs and app crashes, improved performance - Notes Writer Pro is now Nautilus! New user interface, new features and new app icon! - iPhone Duo and iOS 27 ready! Huge major UI/UX app update! Now Microsoft Word and LaTeX compatible documents! - We update Nautilus frequently to make it even better. Each update has product improvements or bug fixes. If you enjoy using the app, please leave us a review! ### 27.0.4 — 2026-11-04 - Fixed several bugs and app crashes, improved performance - Notes Writer Pro is now Nautilus! New user interface, new features and new app icon! - iPhone Duo and iOS 27 ready! Huge major UI/UX app update! Now Microsoft Word and LaTeX compatible documents! - We update Nautilus frequently to make it even better. Each update has product improvements or bug fixes. If you enjoy using the app, please leave us a review! ### 27.0.3 — 2026-10-24 - Notes Writer Pro is now Nautilus! New user interface, new features and new app icon! - iPhone Duo and iOS 27 ready! Huge major UI/UX app update! Now Microsoft Word and LaTeX compatible documents! - We update Nautilus frequently to make it even better. Each update has product improvements or bug fixes. If you enjoy using the app, please leave us a review! ### 27.0.2 — 2026-10-20 - Notes Writer Pro is now Nautilus! New user interface, new features and new app icon! - iPhone Duo and iOS 27 ready! Huge major UI/UX app update! Now Microsoft Word and LaTeX compatible documents! - We update Nautilus frequently to make it even better. Each update has product improvements or bug fixes. If you enjoy using the app, please leave us a review! ### 27.0.1 — 2026-10-19 - Notes Writer Pro is now Nautilus! New user interface, new features and new app icon! - iPhone Duo and iOS 27 ready! Huge major UI/UX app update! Now Microsoft Word and LaTeX compatible documents! - We update Nautilus frequently to make it even better. Each update has product improvements or bug fixes. If you enjoy using the app, please leave us a review! ## More apps by Kairoos Solutions SL - [Nautilus - Web Browser & Notes](https://appshunter.io/ios/app/nautilus-web-browser-and-notes/id401450036) - [PDF PRO Files - Quick & Easy](https://appshunter.io/ios/app/pdf-pro-files-quick-and-easy/id980990291) - [Scanner Prime! - PDF Scan, OCR](https://appshunter.io/ios/app/scanner-prime-pdf-scan-ocr/id980990576) - [Word Processor - Textilus Pro](https://appshunter.io/ios/app/word-processor-textilus-pro/id1018671847) - [Scrivener Companion - Scrivo 3](https://appshunter.io/ios/app/scrivener-companion-scrivo-3/id1068691473) - [TextEdit - Text Editor](https://appshunter.io/ios/app/textedit-text-editor/id1070883678) All apps by Kairoos Solutions SL: https://appshunter.io/developer/978066434 ## Related topics [notes writer](https://appshunter.io/ios/topics/notes-writer) · [touch annotator](https://appshunter.io/ios/topics/touch-annotator) · [nautilus](https://appshunter.io/ios/topics/nautilus) · [cuofco](https://appshunter.io/ios/topics/cuofco) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-11-06.*