Squid: Take Notes, Markup PDFs

Squid: Take Notes, Markup PDFs

Steadfast Innovation, LLC
★★★★☆ 4.1 Productivity 10,000,000+
Verified Safe & Direct
Download APK Google Play
Squid: Take Notes, Markup PDFs Screenshot 1Squid: Take Notes, Markup PDFs Screenshot 2Squid: Take Notes, Markup PDFs Screenshot 3Squid: Take Notes, Markup PDFs Screenshot 4Squid: Take Notes, Markup PDFs Screenshot 5Squid: Take Notes, Markup PDFs Screenshot 6
Version
Varies with device
Downloads
10,000,000+
Updated
Feb 1, 2026
Developer
Steadfast Innovation, LLC
Category
Productivity
Content Rating
Everyone
Package
com.steadfastinnovation.android.projectpapyrus
Platform
Android

Download Sources

Device Configuration

Split APKs Installation Guide

Some apps are distributed as Split APKs (multiple .apk files packaged together) to optimize resources. Standard Android installers cannot open them.

1. Download Split APKs Installer (SAI) from Google Play Store.
2. Download the app archive (.apks) using the download sources listed above.
3. Open SAI, click "Install APKs", choose the downloaded archive, and click Install.

What's New

Squid is over 10 years old! We’ve been working hard on some big updates, which we've coined "Squid10". Squid10 is not yet fully featured and is available via opt-in to get your feedback and make improvements. Just tap "Try Squid10" and be sure to send us your feedback!

Latest Highlights
• Improved support for Android 15+
• Improved local backup process
• Fixed several PDF rendering issues and crashes
• Updated translations
• Misc bug fixes and improvements

Full changelog: http://goo.gl/EsAlNK

About this app

Transform your note-taking experience with Squid! For over 12 years, Squid has been a trusted app with over 12 million installs, helping users replace paper, save money, and reduce waste. Write just like you would on paper on your Android tablet, phone, or Chromebook!

✨ Key Features:

• ✍️ Natural Writing: Seamlessly write with a pen and erase with your finger on active pen enabled devices like Samsung devices with S Pen. Use your finger or capacitive stylus on other devices.
• ⚡ Low Latency Ink: Enjoy a seamless and responsive writing experience with support for low latency ink¹.
• 🔒 Private: Notes are stored on your device and are completely private. No account or sign-in required. Backup your notes to your desired location.
• 📝 PDF Markup: Easily annotate PDFs, fill out forms, edit/grade papers, and sign documents.
• 🧰 Versatile Tools: Use any color pen or highlighter, import images, draw shapes, and add typed text.
• 📁 Organize: Select, copy/paste, and move content between pages and notes. Place notes in folders to stay organized.
• 📊 Presentations: Turn your device into a virtual whiteboard and cast your notes to a TV/projector.
• 📤 Export: Export notes as PDFs, images, or Squid Note format and share or store in the cloud.
• 💰 Save: Reduce stationery costs and replace paper notebooks with Squid for eco-friendly note-taking!

🏆 Awards/Recognition:

• 🌟 Featured App and Editors' Choice in Google Play
• 📈 Category Honorable Mention for Productivity in the Samsung Galaxy Note S Pen App Challenge
• 🎉 Popular Choice Award in the Dual Screen App Challenge

👑 Squid Premium:

• Premium paper backgrounds: math, engineering, music, sports, planning, & more
• Import and markup PDFs
• Additional tools: highlighter, true eraser, shapes, text
• Backup/restore and bulk export notes as PDFs to Google Drive, Dropbox, or Box

🛠️ Base Features:

• Vector graphics engine keeps your notes beautiful at any zoom level and on any device
• Various paper backgrounds (blank, ruled, graph) and sizes (infinite, letter, A4)
• Erase entire letters or words quickly with the stroke eraser
• Undo/redo, select, move, and resize
• Change color and weight of selected items
• Cut, copy, and paste items between notes
• Two-finger scroll, pinch-to-zoom, and double tap for quick zoom
• Sort and organize notes and folders
• Import, crop, and resize images
• Export notes to PDF, PNG, JPEG, or Squid Note format
• Share notes via email, Google Drive, Evernote, etc.
• Multi-Window support (take notes while watching a video)
• Shortcuts to create new notes or open folders
• Dark theme

🎓 Google Workspace for Education customers can purchase Squid Premium in bulk at https://squidnotes.com/edu

🐞 If you encounter any bugs, please email us at [email protected] with a description.
💡 We would love to hear your feedback or feature requests at https://idea.squidnotes.com

¹Low latency ink is available now on Chromebooks and coming soon to Android devices.

🎯 Increase your productivity and unleash your creativity with digital handwritten notes. 👉 Try Squid for FREE today!

User Reviews

G Martinez Apr 15, 2026
★★★★★

I have used this application for several years now, and for me this was the best solution to simulate a true notebook Experience. One area where I think improvments can be made is moving a page around when a specific size is selected. It can be frustrating to write with my hand at the edge of my tablet, when there can be capability to add more of a buffer to the page.

A Google user Oct 10, 2018
★★☆☆☆

I gave it an honest shot. While it is a beautiful app, it lacks the basic staples needed for success. No collaboration, no ability to rearrange notes within a notebook, and most importantly, NO SYNC. This is almost laughable! What powerful note taking app doesn't sync? Doing manual backups and restorations is not only archaic, it is a major liability. How easy is it to lose an entire year of work by accidentally resorting an incorrect backup? Come on guys, this is a no brainer. UPDATE: I dropped from three stars to two stars. I have lost numerous documents because of the lack of syncing options. Also, there has been more than enough time for Squid to update their app to allow automatic syncing. While I understand you can set an automatic cloud update, this is still not helpful because you have to manually restore a backup EVERY SINGLE TIME you use a different device. It is ridiculous.

Jennifer An Jul 27, 2020
★★★★★

Works great for drawing, writing, tracing. It's simple and I like that I'm using all of the free tools, and it's easier than learning how to use the Autodesk app. There are some limited free features, so you do have to freehand shapes and lines, but it works for my purposes. There are also different backgrounds like grids, lines, and even colors of your choice. Just wish they have the option of copying and pasting into different files within the app.

A Google user Mar 12, 2020
★★★☆☆

I loved this app. Seriously considered switching to this exclusively, however, there are some drawbacks. One, there isn't an option to sync to onedrive or googledrive. Huge issue for me, considering I really wanted a way to store all my notes in college. Two, I hate the organization of this app. I can't make folders or subfolders or color coding. Three, I hate the fact that I can't type notes as well. Sometimes I want to handwrite but other times I don't. I hope they update soon.

How to Download Squid: Take Notes, Markup PDFs APK

  1. Enter the package name com.steadfastinnovation.android.projectpapyrus on the APK Downloader.
  2. Select your device architecture (ARM64 recommended for modern devices).
  3. Click Download to get the merged APK file.
  4. Transfer and install the APK on your Android device.
  5. Keep Updated: Visit APKDER.COM regularly to search for and download the latest secure versions of your favorite apps.

Security & Signature Verification

This APK download is 100% safe. We verify that the cryptographic signature of the file matches the official developer credentials. No modifications or adware are injected.

Photos/Media/Files Basic Access
  • read the contents of your USB storage
  • modify or delete the contents of your USB storage
Storage Basic Access
  • read the contents of your USB storage
  • modify or delete the contents of your USB storage
Wi-Fi connection information Basic Access
  • view Wi-Fi connections
Other Basic Access
  • view network connections
  • full network access
  • run at startup
  • draw over other apps
  • use accounts on the device
  • prevent device from sleeping

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