InForm is a frame-by-frame video analysis app for dancers, lifters, climbers, coaches and teachers. Film a move, find the exact moment, measure what changed and put today's attempt beside one from six weeks ago.
See it in action
Short, practical walkthroughs of the tools that help you find and explain what happened in a movement.
What it does
Film directly in InForm, open a clip from your phone, or paste a YouTube link. On Android, you can also share straight from the YouTube app. Then take the movement apart, one frame at a time.
Step one frame at a time with the arrows, or hold them to walk through the moment. Hold a speed anywhere from 0.25× to 2×. Set two markers and loop the same two seconds twenty times while it sinks in.
Drag your finger away from the scrub bar and it gears down — half speed, a fifth, a twentieth — so you can land on the exact frame with a thumb. Pinch to zoom in on the part that matters.
Put a YouTube performance beside your own attempt, or compare today's take with one from six weeks ago. Play both videos together, loop the matching phrase and step forward a frame at a time. A drift corrector keeps them lined up when the two takes aren’t the same length.
This is the one that changes minds. Students who swear nothing has changed go quiet when today is sitting next to March.
Pen, line, arrow, ellipse, text and a real angle tool that snaps to square and stays accurate whatever shape the video is. Every drawing has its own visibility window, so a note appears only over the moment it’s about.
Type a note, or record your voice against a moment — the recording sits inside the sentence you wrote. Tap it to hear it and jump the video there.
Why I built it
As a dancer, weight lifter, rock climber and dance teacher, I was always looking for ways to study movement. I wanted a simple but powerful video tool that worked the way I actually trained and taught. I couldn't find the right one, so I built InForm.
And
All of it is in the same free app, and what is still coming will arrive the same way. There is no second tier.
Capture the screen while you talk over the video and draw on it, then trim it, crop it, and send the whole review as one clip.
Follow a hand, a barbell or a whole skeleton across the clip, with a trail behind it and live angles at the joints. In testing now, and free like the rest when it lands.
File every clip and still under a dated session with a pose tag. The by-pose view then runs left to right through months.
Flip the picture to see a move the way you would face it, drawings and measurements flipping with it. Nothing in the file changes.
Paste a link, or share straight from the YouTube app, and study the performance you are trying to learn from.
Cut the loop out as its own clip with the drawings burned in — or as a file that re-opens with every mark still editable.
Your videos
InForm has no server or account. It doesn't upload your videos or collect analytics. Your clips, drawings and notes stay on your phone unless you choose to share them. That matters when you teach, especially when you teach children.
Being straight with you
Worth knowing before you install it rather than after.
What it costs
I believe good tools for studying movement should be available to everyone, whatever their budget. InForm is free to use as much as you want: no monthly subscription, no ads, no trial that runs out and nothing behind a paywall.
If InForm helps you, a donation through the app's Support screen helps fund its continued development and maintenance. A rating, positive review or word to friends and teammates helps too.
Free, donation-based
Film a move or open a clip you already have. Find the frame that explains what happened, and take that insight into your next attempt.
Android 7.0 or newer · iPhone on iOS 15 or newer.
InForm