
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
- 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
Ratings from users of the source store — not collected or verified by AAPKs.
What's new in v3.8.0.4-GP
Description
From the listing uploaded by “appupdater”.
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+.
Security & authenticity
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.
- Modify shared storage Sensitive android.permission.WRITE_EXTERNAL_STORAGE
- Full network access android.permission.INTERNET
- Google Play install referrer com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE
- In-app purchases (Google Play Billing) com.android.vending.BILLING
- Prevent the device from sleeping android.permission.WAKE_LOCK
- Run at startup android.permission.RECEIVE_BOOT_COMPLETED
- View Wi-Fi connections android.permission.ACCESS_WIFI_STATE
- View network connections android.permission.ACCESS_NETWORK_STATE
Required hardware & features
- Basic touch input android.hardware.faketouch
- Wi-Fi android.hardware.wifi
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.