# Push-up and Plank Coach: Count Clean Reps

> Push-up and Plank Coach counts your push-ups from your camera and checks your form: full down-and-lockout reps only, sagging or piked hips flagged by name. Plank mode banks good-form seconds only. Free, no account, nothing ever leaves your device.

*Interactive tool: enter your values at https://toollantern.win/learn-push-ups-and-plank/ and results update instantly in your browser.*

## Frequently asked questions
### What counts as a push-up in this app?

A complete down-then-up cycle: shoulders drop at least 35% of torso length with elbows bent to 140 degrees or less, then shoulders return within 12% of the start height with elbows open to 160 degrees or more, with hips within 10% of body length of the shoulder-to-ankle line and head in line. Anything less is rejected with the named hint.

### Why do half reps not count?

Because a half rep never reaches the down line, so the muscles never work through the full range. The app rejects part-way dips with Go lower, so you get honest credit: every counted rep is a full rep.

### Do I need any equipment?

No. You need a phone, tablet, or laptop with a camera, about 2 metres of floor space to your side, and a clear floor. A mat helps for knees and forearms. Nothing else.

### How do I set up the camera?

Put the camera to your SIDE, about 2 metres away, at roughly waist height, so it sees your whole body from head to heels. Front view does not work: the app needs the side view to see how low your chest goes. Good light and a plain background help.

### What if the app cannot see me?

It says so instead of guessing: I cannot see your full body. Step back so your head, hips and ankles are in frame. Loose clothing, poor light, a cluttered background, or another person in frame can confuse the pose tracker.

### How does plank mode work?

Good-form seconds accumulate only while your line holds: hips within 10% of body length of the shoulder-to-ankle line, head in line. The moment a fault appears, the good-form clock pauses and the named hint shows. Total elapsed time keeps running, so you can see how much of your hold was clean.

### Does the app record my video?

No. Video frames are analysed on your device and discarded immediately. Nothing is recorded, uploaded or shared, and the page security policy blocks connections to every outside server. The Offline proof panel shows the live request log to prove it.

### Does it work offline?

Yes, after your first visit. The app, the pose model, and all the lessons are saved on your device, so it works with no network at all.

### How do points, levels and badges work?

Each clean rep is +10 points, each good-form plank second is +1, and a passed quiz adds +20. Levels are First Rep, Getting Strong, Solid Core, and Plank Master. Push-up levels unlock at 50, 150, and 300 points; side plank unlocks at 150. Badges cover the first clean rep, the first plank hold, a perfect set, sixty seconds, a passed quiz, and a 7-day streak.

### Can I delete my progress?

Yes. Open Offline proof on the home page and press Delete all my data, or open Settings and press Clear progress. Everything is stored only in your browser, on your device.

### Is this a fitness assessment?

No. This is a home practice tool, not a fitness assessment, teacher, therapist, or safety device. Stop if anything hurts, follow school safety rules, and check with a doctor or qualified professional before exercising if you have a health condition, an injury, or pain.

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Interactive version: https://toollantern.win/learn-push-ups-and-plank/