JTrain is the J line for your training: one trainer, one client, every rep on the record.

LOCAL SERVICE: in the gym
Jonathan logs every set as it happens. One-tap "Log set", a big number pad for weights, rest timers that remember each exercise, RPE in one tap, and what you lifted last time right on the card. Brand-new exercise? Add it by name in two taps and describe it later. Works offline in a basement gym and syncs when you're back above ground.

EXPRESS SERVICE: workouts on your own time
Your trainer writes a plan whenever it suits him and sends it to your phone for the day you'll do it. Follow it stop by stop, swap an exercise if the rack is taken, skip or add as you go, or build your own workout on the spot. He sees exactly what you did next to what he prescribed.

SERVICE CHANGES: adjusted to your recovery
A ten-second morning check-in (energy, soreness, sleep) suggests Full, Moderate, Light or Recovery service and scales the planned loads and sets to match, rounded down to dumbbells and kettlebells that actually exist. It shows you why, and you can always override it.

KNOW YOUR STOPS
A library of 900+ exercises with step-by-step instructions and a muscle map for each one. The most common moves come with an animated demonstration plus what to focus on and what to avoid. Progress charts per exercise: top set, volume and estimated one-rep max.

YOUR DATA, YOUR SIGNAL
Health details stay private unless you switch on sharing for a category. Your trainer sees your workouts and the day's readiness level; everything else is your call. No ads, no tracking, nothing sold.

PROGRESS
Weekly streak, sessions per month, body weight trend, and export of every set to a spreadsheet.

Next stop: Gainsville.

JTrain is a private app for a personal trainer and his clients, and accounts are invite-only. Tap "Explore the demo" on the sign-in screen to look around with sample data.

Eric N D W Ward

Additional Information