The whole motion, in one frame.
Give it a few seconds of video. Get back one photo with the subject repeated across the frame — the skate trick, the golf swing, the jump, laid out all at once.
Runs entirely on your device. Nothing uploads. Install it and it works offline.
What it does
Drop in a short clip. MassStrobo pulls frames, stabilises them so a shaky camera still lines up, and blends the motion into a single stroboscopic image.
Three modes
Subject
Isolates the moving subject, repeats across clean background. The classic strobe look.
Light-trail
Lighten blend for streaks and trails.
Auto
Picks the approach that fits the clip.
Why it's different
Everything on your device
Web app, local processing, no upload, no account.
Works offline
PWA, cached on device.
Handles a shaky camera
Auto frame alignment.
Instant and private
No queue, no render wait, nothing stored.
Free and unlocked
Free
US$0
Composite in any mode, PNG up to 1280px with small watermark.
Unlock
US$9.99
one-time
Full-res, no watermark, manual frame selection.
Pay once — no subscription, no credits, no sales call.
FAQ
Is this an app I install from a store?
It's a web app. Install it to your home screen and it works offline. All processing happens on your device.
Does my video get uploaded?
No. Everything runs locally.
What do I get out?
A single PNG image.
Does it work without a tripod?
Yes. Auto frame stabilisation aligns the frames even from a shaky camera.
What's free vs unlocked?
Free gives you composites in any mode at up to 1280px with a small watermark. The US$9.99 unlock removes the watermark, gives you full-resolution output, and adds manual frame selection.