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Mobile lessons and explanations
Underline a term, point to a diagram, and add a quick visual cue while working from a phone or tablet.
Android 7.0+ beta · Phones & tablets
Android screen annotation tool for touch-first work
Draw, highlight, capture a quick screenshot, and mark up PDFs directly on a supported Android phone or tablet—whether you are explaining, demonstrating, studying, or taking visual notes.
Android 7.0 or newer · 3 GB RAM minimum · Official download page
Touch-optimized annotation on an Android phone or tablet.
Touch-friendly toolsBuilt for phone and tablet
Quick screenshotsFloating capture access
PDF markupAnnotate documents
Local collaborationJoin from Android Pro
Annotate where you are
Turn an Android screen into a visual explanation
Use touch gestures and on-screen tools to make an idea clearer without moving your work to a desktop first.
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App demos and support
Mark the part of an app or mobile workflow you are discussing, then capture the annotated screen for follow-up.
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Documents and visual notes
Use PDF markup and screenshots to review material, communicate feedback, and keep annotated references.
Designed for Android
Useful annotation tools in a mobile workflow
The Android beta focuses on touch-friendly drawing, fast capture, document markup, and supported local collaboration.
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Touch-optimized drawing tools
Annotate and highlight with controls designed for a phone or tablet touchscreen.
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Floating quick-screenshot button
Keep capture access close at hand while you work through an explanation or demonstration.
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PDF markup
Add visual notes and emphasis to PDF material from a supported Android device.
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Phone and tablet support
Use the Android beta on Android 7.0 or newer with at least 3 GB RAM and 250 MB free storage.
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Join local Wi-Fi collaboration
Mobile or Tablet Pro can join a session hosted by Windows Premium on the same local network.
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Official updates and licence checks
Internet is used for activation, updates, and occasional verification; core use follows the applicable licence policy.
Simple Android workflow
Start annotating in three steps
Use the official download page so you get the current beta and its latest setup information.
Check your device
Use Android 7.0 or newer with 3 GB RAM minimum, 250 MB available storage, and internet for activation.
Download from OS Pen
Open the official download page and follow the current Android beta installation guidance.
Annotate and capture
Open the touch-friendly tools, add marks or highlights, and save a quick screenshot or PDF markup when needed.
Android questions
Frequently asked questions
What Android version does OS Pen support?
The Android beta supports Android 7.0 (Nougat) or newer. It requires at least 3 GB RAM and 250 MB free storage; 4 GB RAM or more is recommended.
Can I annotate the screen on an Android phone or tablet?
Yes. OS Pen provides touch-optimized tools for drawing, highlighting, taking quick screenshots, and marking up PDFs on supported Android phones and tablets.
Does the Android app need an internet connection?
Internet is needed for licence or trial activation, updates, and occasional licence verification. Google Play Services is required when using Google sign-in.
Can Android host a Wi-Fi collaboration session?
An Android Mobile or Tablet Pro device can join a local Wi-Fi collaboration session hosted by Windows Premium on the same network, but the Android device cannot host the session.
Where can I download OS Pen for Android?
Use the official OS Pen download page to get the current Android beta and review the latest installation information.
Annotate from your Android device
Get the current Android beta from the official download page, then choose a plan only when you need additional features.