Trayner tracks 33 points on your body, scores every rep and tells you what to fix. Then it plans tomorrow around how you slept.
Free to download. Your first 14 days include Pro, with Form Check.
Film one set. Four things happen.
Choose a measured lift, prop the phone about two metres away at hip height, and hit record. Side-on for most lifts, three-quarter for bench. The app shows you where.
Trayner tracks 33 points on your body through the set and measures depth, angles and tempo against a rubric for that lift.
Not a wall of numbers. The cue that matters for your next set, in plain words. Pin it, and it shows up the next time you train that lift.
Every check is saved per lift, so your technique has a trend line, not just your weights.
Measured today
Live Coach · Pro
Live Coach watches while you lift, counts every rep and cues you mid-set, in your ear. Camera frames are processed on your phone and thrown away. Nothing is recorded.
Validated on squats. Other lifts are in beta.
Training, food, sleep and progress in one app, so each one can change the others. Every chapter ends with Trayner’s call: what it would tell you to do next.
01Train
Open Trayner and today’s session is there, built from last week: the exercises, the order, how long it takes. No planning, no spreadsheet.
Trayner’s callFriday: legs. About 32 minutes.
02Eat
Point your camera at the plate. Trayner reads the dish and lets you correct any ingredient before it’s logged. Barcodes and labels too.
Trayner’s callLeg day. Protein and water go up.
03Recover
Your partner can tell you slept badly. Trayner reads how badly: sleep, resting heart rate and HRV from your watch, graded against your own baseline. And it knows which muscles are still recovering.
Trayner’s callShort night. Keep the weight, drop a set.
04Progress
Last session sets today’s weights. Last week builds this week’s plan. Records, measurements and body composition are in there too, as something Trayner works from, not just something you look at.
Trayner’s callNew squat PR. Friday, try 2.5 kg more.
How you slept changes how you train. What you trained changes what you eat. One Thursday, as Trayner sees it.
5h 12m asleep.
Short of your usual.
You slept short, so
Keep the weight. Drop one set.
Today’s session, adjusted.
With one set dropped,
Squat 3 × 8. Depth held on every rep.
Form Check, rep by rep.
You trained legs, so
40 g of protein to go.
Post-workout target, from what you trained.
Squats again Friday, so
In bed by 22:40.
Leg day tomorrow will thank you.
Hands full
When your phone is propped up filming the set, Trayner moves to your wrist, your lock screen and your voice.
Start a workout and it opens on your Apple Watch. Tick off sets, run the rest, and feel a tap for every rep Live Coach counts.
Change the weight, log the set and skip the rest without unlocking. In the Dynamic Island too.
Tell the coach to swap an exercise, add one, undo a set or finish. It reads back exactly what changed.
Apple Watch and lock-screen controls need an iPhone.
Switching
Bring your log from Hevy, Strong, Lyfta or FitNotes: every session, every set. Your first workout in Trayner already knows your last one.
Import is free, on every plan.
Pricing
Every new account gets 14 days of Pro. No card, nothing to cancel.
Day 1 Pro, all of itDay 14 Your call
Keep ProContinue on Free
Do nothing and you’re on Free. Nothing is charged.
£0
No time limit. Logging, history and food tracking.
14 daysfree
Then monthly or yearly. The store shows your local price.
One more thing
Load the bar, then tap to stand it up. Heavier needs faster taps. The heaviest lift on the board each week wins a free month of Trayner Pro.
102.5kg
25, 15 and 1.25 a side on a 20 kg bar.
Trayner notes Load noted.
Then tap fast to stand it up. Space works too. Your best: kg
Questions
Seven, measured: bodyweight squat, bench press, romanian deadlift, push-up, overhead press, dumbbell overhead press, military press.
Back squat, deadlift and pull-ups aren’t in yet. A lift goes in when it passes validation on real clips, not before.
It stays on your phone, in your form history.
For a standard check on a measured lift, Trayner reads your body position on the phone and sends only those points to be scored, not the video.
A deep check, or a lift outside the measured list, sends the clip to our server and Google’s Gemini model for analysis. Our server deletes it when the analysis is done. Live Coach never records or uploads video.
On your phone. Workouts, food and measurements are stored on your device, not in a Trayner account.
AI features send only what they need for that one answer, like a food photo or the body points from a set.
It says so: “Couldn’t score that set — your body wasn’t clear enough in frame.” Then it tells you which angle to film from.
No. Training, Form Check and food work on the phone alone. A watch adds sleep, resting heart rate and HRV, which is what the Recovery score is made of.
No. It measures what it can see and tells you what to fix. It doesn’t diagnose pain or injury. If something hurts, see a physio.
The app is free. You start with 14 days of Pro, including Form Check and Live Coach. No payment details needed.
After that, Pro is a monthly or yearly subscription. The App Store or Google Play shows the price for your country before you buy.
Free on iPhone and Android. Your first 14 days include Pro.
