The Prime Chapter Trainer

A Training Plan Built From Your Own Numbers

Your calorie and protein targets, a program matched to the days you can actually train, rest timers, a session clock, and a Form Guide that shows you the movement before you load the bar.

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Free · No password, no card · Installs to your phone
The Form Guide: animated movement patterns for the squat and the hip hinge
Form Guide
A Level 2 upper-body session: session timer, then sets, reps, rest timer, set logging and a swap button for each exercise
Today’s Session
The Calendar: the month at a glance, with a log for anything done outside the plan
Calendar
The Overview: the week at a glance and the rules for progressing
Overview
What It Does

The Whole System, in Your Pocket

A full interactive training system — personalized calorie and protein targets from your own numbers, a program matched to how many days you can train, rest timers, a session stopwatch, and a Form Guide with animated movement patterns. It works for any adult who wants a real plan, not just one age group.

Your numbers, not a chart’s

Calorie and protein targets are calculated with the Mifflin-St Jeor equation, the clinically accepted standard, from your age, height, weight, sex and activity level. Change a number and the plan changes with it.

A program for the days you have

One, two, three, four or five days a week — the split is built around what you can actually show up for, not the schedule of a twenty-five-year-old.

Log the set, not the workout

Weight and reps for every set of every exercise, with the last session’s numbers shown beside this one. Rest timers run between sets so you are not guessing.

See the movement first

The Form Guide shows the pattern — squat, hinge, push, pull, carry — with the two cues that matter and the exercises that use it. Get your form checked in person before adding weight.

Works in the gym, offline

Opens in your browser and installs to your phone’s home screen like an app. No download, no signal needed once it is on the phone.

Free

An email and a tick on the terms to start; no password, no card, nothing to cancel. It is the plan I use, written down so it can run itself.

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Also From Prime Chapter

Prime Chapter Health

Weight, food, activity and blood sugar on one screen. Free to start. See the Health app →

This is general information, not medical advice. I am not a doctor or a trainer — check with your physician before changing how you eat or train, and get your form checked in person. The Trainer describes what worked for one person and is not a prescription.