PDF Cabinet vs Aı Note Taker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PDF Cabinet
This application offers a streamlined PDF experience for reading and annotating documents. It focuses on essential features with an intuitive interface, making it easy to mark up PDFs, share annotations, and collaborate in real-time with others. Optimized for performance, it handles large documents efficiently.
- Effortless PDF annotation
- Intuitive user interface
- Fast document review with thumbnails
- Annotations sharing
- Real-time collaboration
- Quick note taking
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THINGS WE ARE PROUD OF - Really effortless PDF annotation - Only the most essential functionality - don't lose yourself in hundreds of buttons - Intuitive user interface that allows you to do exactly what you want - Fast and easy document skimming and review with thumbnails sidebar - Ultimate performance – optimized for really large documents (within reason, of course) - Annotations sharing - send annotated documents to anyone, and mark up will show up in any other reader - Interaction with other Cabinet users - send annotations only to your friends or colleagues using Cabinet – much faster, less traffic - Real-time collaboration with your friends or colleagues – annotate the same document together from several iPads EVEN MORE GREAT THINGS IN CABINET - Amazing and intuitive dynamic annotation menu - Empty notebooks for quick note taking or doodling - Pen and Paper Games for relaxing during non-working hours - Sending multiple documents attached in a single e-mail - Easy work with various document formats - such as .doc, .xls, .ppt and others Did we tell you already that Cabinet is really easy to use? Try it out yourself!
Aı Note Taker
Capture private voice notes, transcribe audio to text, and transform content into PDFs, summaries, and study materials. Chat with your notes using an AI assistant and organize everything locally and securely. Requires iPhone 13 or newer, or 2023+ iPad.
- Unlimited voice notes and transcripts
- AI-powered summaries and quizzes
- AI assistant for chatting with notes
- Text and PDF note creation/editing
- Private and secure local storage
- PDF reader and annotator
- Translation of transcripts and notes
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Voice Notes is the ultimate tool for capturing real-time, private voice notes, transcribing audio, and transforming your content into PDFs, summarized meeting or class notes, learning materials, and more. You can even chat with your voice notes and ask questions about the transcript content! Whether you’re in class, at a meeting, or taking personal notes, Voice Notes empowers you to record, organize, and enhance your voice and text notes with advanced AI, all while keeping your data local and private. Please note that due to the use of advanced local speech-to-text and dictation technologies, the minimum requirement to run this app is an iPhone 13 or later, or an iPad or iPad Pro from 2023 or newer. Key Features: • Unlimited Voice Notes & Transcripts: Record lectures, meetings, or personal notes and receive instant, unlimited transcriptions. • AI-Powered Tool: Easily generate summaries, quizzes, flashcards, additional explanations, and more from your transcripts. Perfect for studying, reviewing class material, or organizing meeting notes and memos. • AI Assistant: Ask questions and chat with your notes, powered by our intelligent AI assistant. • Write Text & PDF Notes: Create and edit text notes, or add notes directly to PDF documents with the built-in text processor and PDF editor. • Private & Secure: Your recordings and notes remain private and secure on your device. This app doesn't send your audio to external servers. • PDF Reader & Editor: Read, annotate, and manage PDF documents seamlessly. • Translate: Translate transcripts and notes into multiple languages and share them as PDF, PNG, or text files. • Share: Send your transcripts and notes as PDF, PNG, or text files. • Organize Your Content: Create unlimited folders and documents to keep your recordings, notes, and PDFs organized. Perfect for students, professionals, and anyone looking to capture and learn from audio notes, Voice Notes helps you unlock the full potential of your recordings with AI. Start recording and transforming your notes today! Important: The minimum requirement to run this app is an iPhone 13 or later, or an iPad or iPad Pro from 2023 or newer. Privacy Policy http://www.noteswriter.com/Kairoos_Privacy_Policy.html EULA https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ This app requires users to have a subscription to unlock all the features after a 3-day risk-free trial.
Screenshots
Verdict
The clearest difference is review sentiment: PDF Cabinet at 66% against Aı Note Taker's 0%. PDF Cabinet also leads on in-app purchases (none vs 1) and ratings volume (56 vs 11). Aı Note Taker's advantage is rating (4.3 vs 3.8) and update cadence (fortnightly vs every 5 weeks). On price, ads and device support 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. Aı Note Taker sells 1 in-app purchase, starting at $2.99 per month. PDF Cabinet asks for nothing beyond the download.
Aı Note Taker holds the better App Store score, 4.3 against 3.8. That said, the two scores are not equally well evidenced: PDF Cabinet has 56 ratings behind it against 11, so its average is the more settled of the two. Written reviews complicate that: 66% of PDF Cabinet's written reviews are positive against 0% of Aı Note Taker's, so the app with the better star average is not the one people write more warmly about.
PDF Cabinet ships an update every 5 weeks, Aı Note Taker fortnightly. The most recent releases landed on October 6, 2026 and October 16, 2026 respectively.
| Parameter | PDF Cabinet | Aı Note Taker |
|---|---|---|
| Price | Free | Free |
| Rating | 3.8 (56 ratings) | 4.3 (11 ratings) — better |
| Positive reviews | 66.1% of reviews — better | 0.0% of reviews |
| Number of ratings | 56 — better | 11 |
| Update frequency | Every 5 weeks | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 75 MB | 863 MB |
| Age rating | 4+ | 4+ |
| Developer | Bright Nine SIA | Kairoos Solutions SL |
Customer experience
PDF Cabinet
Aı Note Taker
Bugs and requests
PDF Cabinet
Reported bugs
5 issues- Randomly deleting files
- Sync issues causing loss of annotations
- Crashing when opening large documents
- Navigation problems when zoomed in
- Annotations not exporting properly
Requested features
7 requests- Add more highlighter and pen color options
- Implement palm rejection for Apple Pencil
- Add ability to resize and move annotation tools
- Improve cloud/sync functionality (iCloud, Dropbox, etc.)
- Implement vertical scrolling for continuous reading
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- Add text box annotation feature
- Improve export/sharing options for annotated documents
Aı Note Taker
Not enough reviews yet to summarise bugs or requests.
In-app purchases
PDF Cabinet
No in-app purchases
Aı Note Taker
- Voice Notes Unlock All and AI3 Days trial$2.991 Month









