The words your coach uses,
defined properly.

One correction at a time, chosen by urgency: the longest-standing error first, then warnings, then camera-angle hints. Cues use the exercise's own wording and can be spoken aloud (voice coaching) — the same cue repeats at most every 10 seconds, and one tap mutes mid-set.

Any moment a measured joint leaves the acceptable range for the exercise — knees diving past the safe angle, torso leaning beyond the allowed forward lean. Faults lower the rep's score, and the most frequent ones are ranked in the session summary's top form issues.

A joint the camera can't measure confidently — it reads dim on the overlay. Angles from low-confidence landmarks are discarded, not guessed: side-view filming hides one arm and one leg by design, and hidden joints are never scored.

The ruleset that defines "right" for one exercise: its rep phases, the acceptable joint-angle ranges, minimum phase durations, left/right symmetry tolerances and the wording of its cues. Profiles are pure data — adding or tuning an exercise changes no code.

One complete pass through the exercise's phase cycle — for a squat, standing → bottom → standing. The counter only counts complete reps, so a cut-short attempt doesn't inflate your tally.

A named segment of the movement — a squat has standing and bottom. Phases have entry conditions expressed in joint angles, and passing through the full cycle in order is what counts as one rep.

A 0–100 quality grade for each repetition: it starts at 100 and drops with the share of time spent out of position and with rushed phase transitions. The summary's "Why this score" line names the exact rule that failed.

The countdown that appears automatically when reps stop for about 10 seconds after a set ends. Each exercise sets its own default, taps adjust it by ±15 seconds, and one completed rep cancels it instantly.

A group of reps performed back-to-back before resting. The app detects set ends from the phase machine itself — that signal is what arms the automatic rest timer.

The colored stick figure drawn over the camera feed: 33 body landmarks per frame, computed on-device. Green joint = in range, amber = approaching a limit, red = out of position, dim = occluded.

The amber zone just inside each limit: the joint is still inside the acceptable range but getting close, so the cue arrives before the fault does — coaching you away from the cliff edge instead of reporting the fall.

The lifting half of a rep, where the working muscle shortens under load — standing up out of a squat, pressing the bar overhead. Minimum durations apply here too: a rushed drive gets the same "slower on the way up" treatment as a rushed descent.

How deep the bottom of a squat or split goes, judged against the knee-angle range the exercise's profile accepts. Near the limits the cue is "Control your depth" — the score wants full, controlled depth, not a deeper-is-always-better contest.

The lowering half of a rep, where the working muscle lengthens under load — descending into a squat, lowering the bar. It's where form most often breaks, so profiles set a minimum duration for it (the squat asks for about a second down) and rushing it draws a spoken cue.

Reviewing a lift against a standard to find technique faults — what a trainer's eye or a gym mirror approximates. A RightRep session is a form check on every rep: joint angles judged frame-by-frame against the exercise's profile, with the faults counted, ranked and scored at the end.

Sitting the hips back with a braced, flat back instead of squatting the torso down — the base pattern behind deadlifts, rows and hip thrusts. The squat profile's "Hinge at the hips" cue fires when the hip mechanics drift out of the accepted range.

An exercise whose "rep" is keeping a position for time instead of moving through a cycle — the bundled plank is one. While the hold runs, the rep counter is replaced by a live minutes:seconds clock, and scoring judges how well the position was maintained.

Knees caving in toward the midline under load — a common squat fault that leaks strength and control. The app flags it through the knees' symmetry rule ("Keep both knees tracking evenly"), and the running-gait analysis checks it explicitly on its frontal pass.

A rep that never completes the full phase cycle — a half-depth squat, a press that stops short. Partials are ignored by the rep counter by design: they don't count, they don't score, they don't pretend.

Getting stronger by asking a little more over time — more weight, more reps, better range of motion, cleaner tempo. Logging the weight used on each session and watching score trends per exercise is how the app supports that progression with data instead of vibes.

How far a joint travels in an exercise, from stretch to contraction. Every profile sets an acceptable angle range per joint — and because the angles are measured in the camera's image plane, filming from the angle the exercise asks for is what keeps the judgment honest.

Evenness between the left and right sides of the same movement. Profiles set a per-joint tolerance, and moving unevenly beyond it fires a symmetry cue — the same rule that catches one knee tracking inside the other.

The duration of each rep phase — how long the descent, the pause and the drive take. Profiles enforce minimum phase durations because control under load is part of form: rushing a transition costs rep-score points and draws a spoken cue.

The forward lean of the torso measured from the shoulders-to-hips line against vertical. The squat profile allows up to 45°; leaning further draws the "Chest up" cue and drops the score.