Kilonotes-Notes & Mark up PDF

42.4k reviews
Content rating
Everyone
10m+
Downloads
Content rating
Everyone
Learn more
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About this app

Tired of disorganized paper notes, inefficient PDF reading, and missing key points in classes? Kilonotes is an all-in-one digital note-taking solution for students and professionals. Besides natural handwritten input, PDF annotation, image and video insertion, it features a powerful built-in AI Assistant to help you record, learn and review more efficiently. Whether it’s taking class notes, learning online courses, extracting reading key points or organizing knowledge, Kilonotes is your perfect paperless companion to boost study and work efficiency.

📝 Natural Handwriting, Beyond Paper Limits
• Natural handwriting experience with smooth and clear strokes
• Multiple brush effects: ballpoint pen, fountain pen, paintbrush and more
• Freely move, zoom and rotate handwritten content for flexible editing
• Undo/redo and adjustable eraser size for effortless writing
• Unlimited virtual paper, no limits to your notes
• Insert images and record audio, never miss key points while listening
• Flashcard feature to build your personalized knowledge base quickly
• OCR text extraction, convert images to editable text efficiently
• Global quick browse, locate needed content with one click

🧠 AI Assistant, Boost Your Efficiency
• AI Q&A & Chat: Chat with AI anytime to ask about note key points, generate mind maps, outline essays and get intelligent content interpretation
• AI Problem Solving: Snap or type in questions, AI provides instant explanations and solutions, conquer math, physics and chemistry problems, say goodbye to blind practice

📖 Professional PDF Reading & Annotation
• Global PDF search, find literature content quickly
• Outline navigation and page jump for efficient reading
• Multiple reading modes: Eye Protection, Dark Mode, Vision Care
• Foreign literature translation and key point extraction, study without barriers
• Flexible PDF annotation extension, seamless reading and writing

🎨 Professional Brushes, Create Freely
• Custom brush colors and color picker tool
• Adjustable brush width for writing, marking and drawing scenarios
• Rich brush strokes with doodle pen, make your notes vivid and beautiful

📒 Customizable Notebooks
• Abundant notebook covers and paper templates: blank, dot grid, square grid, Cornell and more
• Built-in exquisite sticker resources for aesthetic notes and digital bullet journals
• Import PDFs directly and take notes freely in your personalized notebooks
• Build a consistent and personalized learning knowledge base

For suggestions or questions, feel free to contact us:
business@top-stack.com

About Subscription
Pricing may vary by region. Subscription fees will be deducted from your Google Play account-bound credit card. Paid accounts will auto-renew upon expiration. You may cancel auto-renewal at least 24 hours before the end of the current billing period. Subscriptions cannot be cancelled or refunded unless stated otherwise in the Kilonotes Terms of Service. Manage your subscription in your Account Settings after purchase.

Official website: https://www.kilonotesapp.com
Privacy Policy: https://www.top-stack.com/page/Kilonotes_Privacy_Policy_En.html
Terms of Service: https://www.top-stack.com/page/Kilonotes_Terms_of_use_En.html
Handwriting notes, PDF editing & annotation, AI notes & analysis, Record audio
Updated on
9 Nov 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • This app may collect these data types
    App activity, App info and performance and Device or other IDs
  • Data is encrypted in transit
  • You can request that data be deleted

Ratings and reviews

21.4k reviews
Amber
9 September 2022
It's a great app and I do like it but I don't recommend it for Samsung tablets or phones since I've noticed that a lot of stuff are limited on Android than on iPad. You can't really change the style of the pen unlike iPad where it has different ones like a gel pen, fountain pen, marker, a doodle pen with cute stamps and they give you a lot more free, cute and colorful book covers There's more but I can't list it all here!! I wish that they made it the same instead of limiting it for Android. :(
343 people found this review helpful
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Mya Spradlin
19 January 2022
This is an adorable note taking app. However, I would like to zoom into the page more closely so I can write my notes neater and smaller. I also think there should be more colors, but it definitely needs a white for the black pages. It's a decently aesthetic app I just need a bit more from it to make taking notes easier. 🖤
9 people found this review helpful
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Gauri Nair
4 October 2026
Hello! I just read your description of this wonderful app and I was truly amazed to find out that it had many unique features for note taking, but it's really unfortunate that most of them (such as the gradient font and doodle pen) just don't appear in my phone, even though it runs Android 16 in it. It would really help to add all of those features in the app for Android mobile phones. Thanks so much Kilonotes team! Edit: The UI is very different on my phone then in the picture they've given 😕
7 people found this review helpful
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What's new

1. Added a handwriting-to-text feature; you can enable this option within the gel pen settings and customize parameters such as font style and size.
2. Added new styles for the gel pen, including dashed lines, outlines, and shadows.
3. Added a calculator feature.
Content rating
Everyone
Learn more

App support

Phone number
+8615556955227
About the developer
合肥栈顶信息科技有限公司
business@top-stack.com
高新区彩虹路222号创新国际大厦B座1722室 合肥市, 安徽省 China 230000
+86 155 5695 5227

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