SlowStrong
High-Intensity Training, automated

One set. Total failure. Real growth.

SlowStrong guides you through a program based on Mike Mentzer's published method: a strict 4-2-4 rep cadence, a 96-hour recovery clock and automatic progressive overload. Less time in the gym. More muscle.

Start trainingTry the free home program
1
working set
10s
per rep
96h
recovery
Live cadence10s / rep
4Negative

Lower under total control

Why most programs stall you

Volume programs assume more is better. Past the point of failure, extra sets only drain the recovery you need to grow.

Typical splitSlowStrong
Working sets per exercise3 to 51, to failure
Training days5 to 6 per weekEvery 4 to 7 days
Rep tempoWhatever feels rightStrict 4-2-4
ProgressionGuess and hopeA clear rule: reps, then weight

See it in the app

Real screens from the app, on a phone.

  • The Heavy Duty screen showing your week and today's workout

    Heavy Duty

  • The Home Gym screen showing a 90-day plan and the weekly goal

    Home Gym

  • The Logbook screen showing a calendar of trained days

    Logbook

Everything you need, in one app

Heavy Duty

One all-out set per exercise at a slow 4-2-4 tempo, with a spoken count. Based on Mike Mentzer's published method.

Recovery countdown

A 96-hour clock (a little longer from age 40) shows when you are ready again, and warns you if you try to train too soon.

Automatic progression

Reach the top of your rep range and the app adds weight next time. Otherwise it asks for one more rep.

Home Gym and Gym plans

A free 90-day home plan with or without equipment, plus beginner to advanced gym programs with photos of every lift.

Nutrition that adjusts

Calorie and protein targets from your body and goal, a simple food log, and a weekly check that adjusts to your real results.

A logbook that explains itself

Every set, your best lifts, a training calendar, body weight and measurements, all on one screen.

How it works

  1. 1

    Tell us about you

    Enter your age, weight and goal. The app sets your recovery window and calorie target.

  2. 2

    Train one set

    Follow the cadence to true failure on each exercise. Then stop.

  3. 3

    Recover and repeat

    The clock counts down. Come back when it hits zero and beat your last log.

Free during the beta

Every program is open while we test. No card needed, and nothing is charged.

Free beta

$0everything included while we test

  • Heavy Duty, Gym and Home Gym programs
  • Heavy Duty workouts with a spoken 4-2-4 count
  • Recovery countdown and automatic progression
  • Logbook, body weight and measurements
  • Nutrition targets, food log and AI coach
Start training

Train less. Train harder. Grow.

Every program is free during the beta. Your progress stays on your device.

Start training