Honest limits

What Upfit can't check

Last updated 9 October 2026

Upfit counts reps and speaks form cues from your front camera. It checks only a limited set of things, and it can be wrong. Our own support copy says so: "some of the feedback you get will be wrong."

What does Upfit check?

Each exercise has its own detector. The checks cover things like depth and range of motion, stance width, the right leg or side, whether your feet left the floor, arm position, and the line of your body in a plank.

What does Upfit not check?

No detector checks:

knees caving in
a rounding back
neck position
breathing
weight or load
heart rate

Two moves, Hops and Easy Jog, only count and pace you. They give no form corrections. The Low Plank Hold is a timed hold with no reps.

What can the camera not see?

Upfit needs a clear view of your whole body, head to feet. The pose model ignores low-confidence detections, and the coach goes quiet when it cannot see a person. The app does not check your lighting or tell you that the camera cannot see you well, so set up in a well-lit space with a clear background. Upfit tracks one person at a time.

Why are some moves done side-on?

Most exercises are tracked facing the camera. Floor moves such as planks, crunches, bridges and burpees are tracked with the phone side-on to you. The app tells you which way to face. A move can only be checked from the angle it was built for.

What does the form score mean?

The form score is not a measure of accuracy. Each exercise starts at 100 and loses 5 points for every correction or idle nudge, down to a minimum of 40. It counts how many corrections you got. It does not measure how good your form is. Treat it as a count of corrections.

Calories are estimates. They are based on a standard value for each exercise and your body weight, with no heart-rate input.

Is Upfit medical advice?

No. Upfit is a fitness app, not a medical device, and its cues are general exercise guidance. It does not screen for injuries or health conditions. Consult a doctor before starting a new exercise programme, and stop if you feel pain or dizziness.

Which devices does Upfit work on?

Upfit is for iPhone only. There is no iPad, Android or web version. The app and its voice are in English only. A workout needs an internet connection to start.

What else does Upfit not do?

It cannot hear you. There are no voice commands and no chatbot. The coach speaks pre-recorded lines.
Workouts are bodyweight only. There is one 15-exercise format, and you cannot choose the workout type, length or body part.
It does not record or replay video of you.