What is Form Fighter?

Form Fighter is a web app that turns your phone into a strike coach. It watches you throw with the camera, finds the one mechanic costing you most, then runs a hands-free corrective drill out loud while you throw again.

What’s a good app for shadow boxing form if I only have a phone?

Form Fighter is built for that: phone camera only, one weak mechanic per set, then a live corrective drill out loud so you can re-throw and see if the form moved — no bag or sensors required.

Is Form Fighter an AI boxing coach?

It uses phone-camera pose tracking and automated coaching cues. The useful part is the loop — one fault named, drilled hands-free, then re-tested — not a vague “AI” label.

Do I need a heavy bag or wearable sensors?

No. You need a phone, a quiet room, and enough space to throw with your full body in frame. No bag, no sensors, no appointment.

How does the coaching work hands-free?

During a drill set the coach speaks cues out loud and listens for simple voice commands like ready, pause, go, and finish so you never have to tap the screen mid-round.

What does it look at?

Pose tracking watches your guard, hips, balance, and recovery. Instead of listing every fault, it picks the single weakest mechanic worth fixing in that session.

Form Fighter

Every wrong rep is practice for the mistake

It drills the fix out loud while you throw — then checks it stuck

Prop up your phone. Form Fighter names the one mechanic costing you, runs the corrective set out loud, then has you throw again to see if it moved — no bag, no sensors, no appointment.

Start free

See how it works

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

Phone camera only1 mechanic per setVoice-guided reps

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

Getting set

Hands-free

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.

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

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.