Turn any screen into your canvas. Draw, highlight, and explain over any app, video, or desktop with precision tools for lessons, presentations, tutorials, and live walkthroughs.
Annotate, highlight, and mark up your screen on Android too — touch-optimized drawing tools, a floating quick-screenshot button, and PDF markup, right from your phone or tablet.
Every tool you'd otherwise buy across two or three separate apps, in one lightweight overlay.
A floating toolbar that follows you across apps, browser tabs, and video calls — pull it up in one click and start marking up whatever's on screen.
Ruler, protractor, compass, and live coordinates make this genuinely useful for classrooms, CAD walkthroughs, and technical demos — not just quick markup.
Spotlight and curtain tools hide distractions, a laser pointer keeps eyes on your cursor, and a timer keeps every session on schedule.
Record a quick GIF, export a redacted PDF for compliance, or bring in a colleague for a multi-user annotation session over WiFi — all without leaving the app.
One toolset, four very different jobs.
The toolbar overlays whatever's on screen — pick a pen, shape, or spotlight.
Draw, present, or record. Activate a license anytime to unlock Pro.
No account for the free core tools, no screen-content telemetry — nothing is uploaded unless you choose to export it.
Core drawing and annotation tools work offline after activation. Internet is required for activation and restoration after reinstall. Offline access follows the signed licence; monthly and yearly plans end on their paid-through date. Lifetime licences remain available offline after activation. WiFi Collaboration needs devices on the same local WiFi network.
Your annotations, screenshots, and sessions stay on your device. Privacy-safe crash diagnostics may be used only to improve reliability and never include your screen content, ink strokes, file names, or annotated files.
Built by the same team behind Snowfairy AI™ IntelliRecover, using the same account and license infrastructure.
Most annotation apps give you either drawing, or cursor tools, or screen recording — rarely all three plus WiFi collaboration.
Ruler, protractor, compass, and coordinates make this genuinely useful for teaching and technical walkthroughs — not just quick markup.
Download and use Pen, Eraser, and Screenshot free, forever — no account required. Sign up for a free trial to unlock every tool, including Wi-Fi/LAN Collaboration, or buy Premium to keep unlimited tool access for good — Wi-Fi/LAN Collaboration is a complimentary Premium Beta feature included at no additional charge.
Snowfairy AI™ OS PEN is built for anyone who writes, teaches, explains, or presents on a screen — teachers, tutors, coaching institutes, schools, colleges, online educators, corporate trainers, YouTubers, presenters, and anyone using an interactive smart-board or a Windows touchscreen. It's designed to write, teach, explain, and present — anywhere on your screen.
Yes. Core annotation works offline after activation. Internet is required for activation and restoration after reinstall. Offline access follows the signed licence; monthly and yearly plans end on their paid-through date. WiFi Collaboration works over your local network and does not need internet access.
Not yet — Snowfairy AI™ OS PEN currently supports Windows (any Windows 11 PC, or Windows 10 updated any time from 2020 onward) and Android (Android 7.0+, Beta). There's no Mac or Linux version at this time.
The Windows download is 228.8 MiB (239.9 MB), and one installer covers both 32-bit and 64-bit PCs—it detects the correct version automatically. The Android download is 112.7 MiB (118.2 MB). Devices may display either measurement. Installation takes under a minute on most connections.
Any Windows 11 PC, or Windows 10 updated any time from 2020 onward. You'll also want 4 GB RAM minimum (8 GB recommended) and at least 2 GB of free disk space for the download, temporary setup files, and installed app. Internet is required for activation, updates, and occasional licence verification; drawing and screenshots work offline within the licence policy described above.
Creator Recorder (Beta): Standard screen, microphone, and normal creator-camera recording are available on both 32-bit and 64-bit Windows; 8 GB RAM is recommended. Automatic camera-background removal requires 64-bit Windows. For background removal or recording multiple monitors at once, 16 GB RAM and a reasonably modern graphics card work best. Recording quality automatically adjusts to what your PC can handle.
Android 7.0 (Nougat) or newer, 3 GB RAM minimum (4 GB+ recommended), and 250 MB free storage. Internet is needed for licence/trial activation, updates, and occasional licence verification; Google Play Services is required for Google sign-in.
Not automatically — each plan is its own separate license, bound to that plan when you buy it. If you bought Standard and later want Pro's features, you'd purchase a new Pro license rather than "upgrading" the existing one. If you're unsure which plan is right for you, email support@snowfairy.ai before buying and we're happy to help you choose.
Yes — Mobile/Tablet Pro can join a WiFi collaboration session started by a Windows Premium host, as long as both devices are on the same local network, with full read/write annotation access once connected. It can't start (host) a session itself — hosting stays on Windows by design, because a host has to stay reachable and running in the background for everyone else to connect to, and phone/tablet OSes aggressively suspend or kill background apps to save battery, which would silently drop the whole session for every connected participant. Keeping the host role on a desktop, which doesn't have that restriction, helps collaboration stay reliable for the whole group. Since this runs over your local WiFi, session quality and how many people can join smoothly depend on your network's speed and stability.
No. OS Pen is a screen annotation and presentation tool — pen, shapes, spotlight, screenshots, recording, and collaboration on top of your existing screen. It does not generate deepfakes, face swaps, voice impersonations, or any other AI-generated likeness or content.
No. Beta features may have compatibility limitations and may change as they are tested and improved. Wi-Fi/LAN Collaboration depends on the local network and participating devices. Creator Recorder depends on supported Windows, camera, microphone, drivers and device hardware capabilities.
Creator Recorder is designed to process and save recordings locally unless the user separately chooses an upload or sharing action. Snowfairy does not automatically receive the recorded screen, camera or microphone content.
Free trial available — sign up with a verified email, no credit card required.