Form Fighter

Already filming your bag work?

Stop replaying clips wondering what looks off.

Upload a bag-work clip. Form Fighter finds one visible correction to train next—then coaches the next set hands-free.

Private, evidence-linked feedback for solo bag work. Built for visible technique—not sparring strategy.

Get the iPhone appAndroid coming soon

Free to start. No card.

7 days free on Pro · no payment due now · cancel in two taps

50+ fighters have trained with Form Fighter · as of August 2026

One clip. One visible correction.Hands-free corrective setPrivate bag-work feedback

One mechanic, not a laundry list
The session picks the leak that costs you most today.
Corrective set, not just a score
It drills the fix out loud while you throw.
Hands stay free
Voice cues and commands — no mid-round phone tapping.

Form Fighter tracking a jab — skeleton on the guard from a real clip

1. Upload a clip you already filmed.
2. See the one pattern across the round.
3. Run the corrective set hands-free.
4. Recheck the same movement.

It sees what you can't

You can't watch
yourself throw.

That's the whole problem with training on your own. The shot felt clean. Nothing tells you the hip never came with it, or that the hand came home slow.

Form Fighter watches your guard, your hips, your balance and your recovery, and tells you which one is actually costing you. Not a list of everything you're doing wrong. The one worth fixing today.

Then it drills it

It calls the fix
while you throw.

Ten reps on the one mechanic that's broken. It calls every rep as you throw it, catches the same mistake twice and changes the cue. Hands stay free — say pause, go, finish or ready and it's listening the whole set.

Then you throw the strike again and find out whether it actually moved. That's the loop, for as long as you feel like training.

Form Fighter tracking a fighter mid-jab from a propped-up phone, with the weak mechanic named and a corrective cue on screen

Getting set

Hands-free

Your review becomes today’s set.

Hips first — turn harder.

Chin covered — off hand stays glued.

Snap it back — faster home than out.

That's it. Again.

What it says mid-set

Then check it

See whether the correction changed.

After the set, upload a comparable clip. We look at the same observable — getting steadier, still active, or need a clearer check. Never mastery. Never fight-ready.

Coach Memory

We remember what you are building.

One active focus at a time. We compare the next clip against that choice — then only add the next foundation when this one is reliable in recent solo checks.

Stable stance
Build this after the current foundation
Controlled weight transfer
Build this after the current foundation
Balanced reset
Build this after the current foundation
Guard and posture recovery
Build this after the current foundation

Filming guidance

Film so the read can hold.

10–20 seconds. Full body in frame. One person. Side or front-quarter. Then we can pick one visible correction.

The real cost of solo work

Solo reps don't correct themselves.

Nobody's watching. The shot felt fine. You rack another round and call it a good day.

Every wrong rep is practice for the mistake. A week later it's not a bad habit you can shrug off — it's the way you throw.

Form Fighter picks the one leak, drills it live, then has you throw again so you know whether it actually moved.

Why not just…

Tutorials never look at your rep.

A tutorial video

Shows you a perfect rep. Never once looks at yours.

A class

The coach has twelve other people in the room. You get corrected when it's your turn.

Training on your own

Every rep you throw wrong is a rep you're teaching yourself to keep throwing wrong.

Other form apps

They hand you a grade and leave. No corrective set, no voice — and you're tapping a screen mid-round.

vs YouTube vs sensors vs in-person coach vs Strike Force vs JAB AI vs PunchAI

Form Fighter picks one mechanic instead of twenty, runs the set instead of grading you, and keeps your hands free the whole way through.

Three phone screens of Form Fighter running in a mobile browser: the what-it-sees and what-it-doesn't breakdown, the hero with Start free, and the plan cards showing 7 days free and cancel in two taps. — On iPhone, get it from the App Store. Android coming soon — or start in the browser on any phone.

Straight about what it is

It can't feel your weight.

You've probably seen an app promise to replace your coach. This one doesn't. Here is exactly what the camera reads and exactly what it misses, so you can decide before you give it a round.

What it sees

Guard height, and whether it drops after the shot
Hip rotation, and whether it leads the hand or trails it
Balance through the throw and after it
Recovery — how fast the hand actually comes home

What it doesn't

Your weight transfer. It can't feel the floor through your feet.
Power. No camera measures force without a sensor on you.
Timing against a live opponent, or what you meant to do.
Pads, sparring, and a coach in the room. Those don't get replaced.

We are not a replacement for pads, sparring, or a coach who can feel your weight. We cover the gap between sessions — the living-room rounds where form used to be guesswork. If what you want is a punch counter, a round timer, or a workout that leaves you sweaty, this isn't it.

Live camera practice uses standard 2D feedback on the strikes in your discipline. Enhanced movement review is available for supported sessions when eligible. Android is coming soon — train in the browser today. What we can and cannot measure · What Form Fighter is · Camera setup · Jab guide.

Supported checks. One focus at a time.

Boxer in hand wraps at the top of a jab, lead hand already back at the chin — the recovery Form Fighter times.

JabSnap, don't push

Muay Thai fighter landing a cross in the ring with the rear shoulder turned all the way through — the hips-before-hands timing Form Fighter checks.

CrossHips before hands

Uppercut

Dip, then lift

Muay Thai fighter turning a roundhouse through into a high guard — the visible turn Form Fighter can watch on camera.

RoundhouseTurn through the kick

TeepChamber, then push

Knee

Hips through, knee up

Hook

Elbow behind the fist

Kickboxer landing a head kick over a high guard, upper body leaning back to stay balanced.

Head kickHip up, lean controlled

In their words

What fighters say after a set

“This is one of the best apps I've ever used. Gave me great feedback on my form, I feel sharper than ever”

Julian Parker

Muay Thai · Jersey City