Squid: Take Notes, Markup PDFs app icon

Squid: Take Notes, Markup PDFs

Take handwritten notes for class, work, or fun! Easily markup PDFs and share…

Steadfast Innovation, LLC · com.steadfastinnovation.android.projectpapyrus

4.5 out of 5 (25 ratings) 10M+ downloads v3.8.0.4-GP 13.8 MB Android 4.1+ PEGI 3 · Everyone

  • Signature matches the Google Play version Details

At a glance

Latest version
v3.8.0.4-GP (3080004)
Updated
Jun 20, 2025 (1 year ago)
APK size
13.8 MB
Requires
Android 4.1+ (API 16)
CPU support
x86 64-bit
Category
Productivity (app)
Listed since
Aug 7, 2020 (at least)
Permissions
8 (1 sensitive)
Website
squidnotes.com
Developer contact
[email protected]
Privacy
Developer's privacy policy

About this APK

Squid: Take Notes, Markup PDFs is an app by Steadfast Innovation, LLC in the Productivity category, listed since at least August 2020. It includes native code only for x86 64-bit, so it won't install on ordinary ARM phones (only on x86 devices such as emulators and some Chromebooks).

Since version 3.4.5.3-GP, the minimum Android version rose from 4.0 to 4.1. It asks for 8 permissions, 1 of them sensitive: modify shared storage. Compared with version 3.4.5.3-GP, it drops 2 permissions: “Receive push notifications” and “Read Google service settings”. The app offers in-app purchases through Google Play.

Ratings

4.5out of 525 ratings
  • 5 ★72%
  • 4 ★8%
  • 3 ★20%
  • 2 ★0%
  • 1 ★0%

Ratings from users of the source store — not collected or verified by AAPKs.

What's new in v3.8.0.4-GP

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 • Export notes and folders to PDF or Squid Note formats in Squid10! • Fixed occasional stuck backup notification • Many miscellaneous bug fixes and improvements Full changelog: http://goo.gl/EsAlNK

Description

From the listing uploaded by “appupdater”.

Take handwritten notes naturally on your Android tablet, phone, or Chromebook supporting Android apps! With Squid you can write just like you would on paper using an active pen, passive stylus, or your finger. Easily markup PDFs to fill out forms, edit/grade papers, or sign documents. Import images, draw shapes, and add typed text to your notes. Quickly select, copy/paste, and move content between pages and notes. Organize your notes within notebooks and increase your productivity! Turn your device into a virtual whiteboard or give presentations in a class, meeting, or conference by wirelessly casting to a TV/projector (e.g. using Miracast, Chromecast). Export notes as PDFs or images, then share them with others or store them in the cloud! Squid is vector based - keeping your notes beautiful at any zoom level and on any device. You can erase entire letters and words quickly with the stroke eraser tool, or just parts of words with the true eraser tool. The selection tool allows you to change the color and thickness of your handwriting and even resize a drawing whenever you want without any loss in quality. Squid takes special advantage of active pens on capable devices to provide natural, pressure-sensitive handwriting. Just write with the pen and erase with your finger! Squid is designed to be both powerful and simple to use, allowing you to take notes quickly and efficiently. Awards/Recognition • Featured App in Google Play • Category Honorable Mention for Productivity in the Samsung Galaxy Note S Pen App Challenge: https://goo.gl/Ji9dCS • Popular Choice Award in the Dual Screen App Challenge: https://goo.gl/J7uT0B Key Features • Take notes naturally with a pen and erase with your finger on active pen enabled devices (e.g. Galaxy Note devices with S Pen) • Take notes with your finger or passive stylus on non-active pen devices (e.g. Nexus 7) • Vector graphics engine • Multiple paper types (e.g. blank, ruled, graph) and sizes (e.g. infinite, letter, A4) • Undo/redo, select, move, and resize • Change the color and weight of selected items • Cut, copy, and paste items between notes • Two-finger scroll and pinch-to-zoom • Two-finger double tap to quickly jump to a specific zoom level • Organize notes within notebooks • Sort notes and notebooks • Import, crop, and resize images • Export notes to PDF, PNG, or JPEG for printing, archiving, or sharing • Share notes with friends and colleagues via email, Evernote, etc. • Multi-Window support • Shortcuts to create a new note or open a notebook • Present notes on a secondary display via HDMI, Chromecast, etc. (Android 4.2+) Squid Premium • Create notes and pages with premium backgrounds (math, engineering, music, sports, etc.) • Import PDFs and mark them up like any other note • Express yourself with additional tools (highlighter, “true” eraser, shapes, text) • Backup/restore and bulk export notes as PDFs to cloud storage providers Dropbox and Box Learn more about Squid Premium: https://goo.gl/mJFjeO Google Workspace for Education customers can purchase Squid Premium in bulk using the Squid EDU Bulk License app ( https://goo.gl/Kkxjtk ) Information about active pen devices: https://goo.gl/6BRJy Explanation of required permissions: https://goo.gl/q5f8Y If you encounter any bugs, please email us at [email protected] with a description of the bug! We would love to hear any feedback or feature requests you have at https://idea.squidnotes.com

Version history

2 versions are listed, going back to v3.4.5.3-GP. Since v3.8.0.4-GP it requires Android 4.1+.

All 2 versions

Security & authenticity

Security rating: Trusted

Signing certificate

  • Signature matches the Google Play version Checked by the source store on Jun 20, 2025.
  • Certificate issued to “Steadfast Innovation” This is the certificate of the Google Play version.
  • Same certificate as the other version checked

Store checks and file details

  • Developer signature verified Jun 20, 2025
  • Validated against Google Play Jun 20, 2025
  • Signed byO=Steadfast Innovation, L=San Luis Obispo, ST=CA, C=US
  • Signing certificate (SHA-1)64:21:8E:2F:1D:CB:25:79:3D:31:D0:BA:81:3C:61:D8:30:42:17:8E
  • File MD58bb25a1f311b0fc88262ff631684187a
  • Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020

Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (1 other version compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (8)

Squid: Take Notes, Markup PDFs requests 8 permissions, 1 of them sensitive.

Required hardware & features

Squid: Take Notes, Markup PDFs APK: questions and answers

Is there a version of Squid: Take Notes, Markup PDFs for older Android phones?

The current version needs Android 4.1 or later. Version 3.4.5.3-GP is the newest listed build that installs on Android 4.0 and later. Get version 3.4.5.3-GP · All versions

Can I install this APK over the version I already have?

Yes, if your installed copy is older. It is signed like the Google Play version, so Android installs it as an update and keeps your data.

Is Squid: Take Notes, Markup PDFs free?

The APK is free to download, but the app offers in-app purchases through Google Play.

Is the Squid: Take Notes, Markup PDFs APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. Its signature matches the Google Play version. It is signed with the same certificate as the other version checked. After downloading, check that the file's MD5 is 8bb25a1f311b0fc88262ff631684187a.

Tags

More Productivity apps