Squid Icon

Squid APK for Android

- Take Notes, Markup PDFs
12M+
Free
Mar 30, 2026

Take notes on the screen of your mobile device, like on a piece of paper

Download Squid APK 4.5.3 22MB Old versions

What is Squid?

Squid is a note-taking and editing tool on your smartphone or tablet that supports handwriting with a dedicated pen or finger. Typing text using the built-in keyboard is not always convenient and appropriate, it is much more comfortable to take notes on the screen of a mobile device, as if on a regular notebook sheet.

Before using the application for the first time, we advise you to pay attention to the training, where the functionality and rules for its use are presented in a visual format. To create a new note, the user just needs to click on the icon with a plus sign, then give a name to the document, select a background color and ink, and fill the page with content.

In addition to handwriting, the program allows you to import PDF, insert images from other applications or from the camera, create perfect shapes, use markers, add text using the keyboard, erase notes with an eraser, highlight selected elements for copying and moving between notes and pages.

Features:

  • quick notes with a finger, passive stylus or active pen;
  • change character color, background and page size;
  • export records to cloud storage Dropbox .

Adjust the thickness of the Squid pen and activate pressure detection if supported by your device. Add additional pages with one touch, and use the corresponding arrows to navigate between them. Export recordings to PDF or image (PNG, JPEG) and share them with other users.

Also known as: Squid: Take Notes, Markup PDFs
Video of Squid
Screenshot Squid 1
Screenshot Squid 2
Screenshot Squid 3
Screenshot Squid 4
Screenshot Squid 5

Download Squid: Take Notes, Markup PDFs APK for Android

What's New in Version 4.5.3

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

Other versions

System Requirements

OS Version
Android 5.0 (Lollipop) or higher
Architecture
Varies by file (Which one do I need?)
Disk Space
~30 MB free space required
RAM
1 GB
Internet
Not required
Permissions (17)
  • Internet
  • Access Network State
  • Read External Storage
  • Write External Storage
  • Wake Lock

APK File Details

Package ID com.steadfastinnovation.android.projectpapyrus
Available on Google Play
Developer Steadfast Innovation, LLC
License Free ( No Ads)
Monetization In-App Purchases
Content Rating Everyone
Interface Language
English +16

English, Spanish, French, Russian, Chinese, Italian, Japanese, Turkish, Arabic, Hindi, Korean, Portuguese, Thai, German, Vietnamese, + 2 localizations

APK Verification & Virus Scan Results

Scan In Queue Signature Verified Safe & Original

Antivirus scan in queue, will be scanned soon. This APK is free of malware and its signature matches the official developer release.

Show File Details (SHA-256, SHA-1, MD5)

SHA-1 Signature:

64218e2f1dcb25793d31d0ba813c61d83042178e

SHA-256 Hash:

7e8bbccebb190fe85e8db6e3dd247b3f8b270a1815a05a6bbc2ea9f7f5f01db6

MD5 Checksum:

63a568c7ab5fc281e94c625a17b82443

Frequently Asked Questions

Is Squid safe to download?

Squid has passed a basic integrity check. A full antivirus scan is pending. You can check the current scan status in the Security section above.

How to install XAPK file?

XAPK is a split APK package. Standard Android installer cannot open it directly. Use 'SAI' or 'XAPK Installer' — they handle XAPK files automatically. Download the installer, open the XAPK file with it, and follow the on-screen steps. Read more

What Android version does Squid require?

Squid requires Android 5.0 (API 21) or higher. Optimized for Android 15 (API 35).

Is Squid free?

Yes, the app is free to download, but it contains in-app purchases for additional content.

How to update Squid to the latest version?

Download the latest APK from this page and install it over your existing version — no need to uninstall first. Your data and settings will be preserved. We update the file as soon as a new version is released.

What processor architecture does Squid support?

Squid supports armeabi-v7a. This build does not support x86/x86_64 processors, so it will not run on most PC emulators. If you are unsure about your device architecture, check the Device Info section on this page.

How to enable installation from unknown sources on Android?

Go to Settings → Security (or Settings → Apps → Special access on Android 8+) and enable "Install unknown apps" for your browser or file manager. On Android 8 and above this setting is per-app, not global. Read more

If you have found any issue or are having difficulty with this page, please .

User Reviews & Ratings

Global rating(Play Store): 4.29(64.5K)
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