Coming to iPhone and Android

Proven programs.
Every number worked out.

Catalyst runs the training programs lifters and runners trust, from GZCLP and 5/3/1 to nSuns and Couch to 5K, exactly as written. Enter your numbers once; every set, weight and next step follows. Not sure which program? Find yours →

Workout B1

Wednesday
  • T1Barbell overhead press42.5 kg
    4 × 3, 1 × 3+
  • T2Conventional deadlift70 kg
    3 × 10
  • T3Two-arm dumbbell row25 kg
    2 × 15, 1 × 15+ · per dumbbell

Workout A1

Monday
  • T1Back squat85 kg
    4 × 3, 1 × 3+
  • T2Barbell bench press40 kg
    3 × 10
  • T3Lat pulldown55 kg
    2 × 15, 1 × 15+

Back squat T1 · 12-week forecast

85 → 125 kg

GZCLP, week 1, worked out by Catalyst for an example lifter.

Programs
475
Styles of training
10
Account needed
None
Signal needed
None

How it works

You lift. The program runs itself.

The best programs are precise: percentages, stages, deloads, resets. Catalyst follows them to the letter, so you never open a spreadsheet again.

  1. 1

    Choose a program

    Strength, muscle, powerlifting, running, conditioning or mobility. Every program is explained before you start: its schedule, its sets and where it takes you.

    Find yours
  2. 2

    Enter your numbers

    A recent set or a max for each lift. Catalyst turns them into your starting weights exactly the way the program says to.

  3. 3

    Train. Catalyst does the maths.

    Every set, weight and rest is ready when you are. Log a set with one tap; when you finish, the program’s own rules decide what comes next.

Popular programs

Explore before you commit.

Every program page shows its full schedule, each workout’s sets and weights, a twelve-week forecast and the weekly sets for each muscle. Change the numbers to see your own.

Not sure which? Find the one for you

Inside the app

Everything between the sets, handled.

  • Progression, done for you

    Add weight, change stage, deload, retest: each program’s own rules run after every workout, so the next one is always right.

  • One tap per set

    Log a set as prescribed in a single tap, or adjust the reps and weight. Corrections never rewrite your history.

  • Rest timer on your lock screen

    The rest after each set counts down where you can see it, and tells you when it’s time for the next.

  • Plates and warm-ups worked out

    See which plates go on each side of the bar, with warm-up sets that build to your first working set.

  • History and records

    Every workout kept, every lift charted from your first session to your last, with your records as they fall.

  • Offline and yours

    No account needed and no signal required. Your training stays on your phone, and you can export all of it at any time.

The library

475 programs. Each one written down exactly.

From a first barbell program to a meet peak, a first 5K to a half marathon. Each program follows its author’s work, with their rules intact.

  • Powerlifting210
  • Muscle building96
  • Strength: steady progress54
  • Bodyweight and kettlebell35
  • Strength: waves and cycles35
  • Conditioning14
  • Running13
  • Rehab and mobility11
  • Other endurance4
  • Intensity techniques3

Be first to train with Catalyst.

Join the waitlist and we’ll email you the day it launches.