A strength program that grows with you.
Chalk starts with your lifting and keeps adapting as you log your sets.
Why Chalk
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Personal from the start
Your onboarding answers shape a plan around your experience, goals and training days.
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The right effort for each set
Train with prescribed RPE targets so you know how hard each set should feel.
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Your training keeps adapting
What you log helps Chalk adjust upcoming sets and shape the training blocks ahead.
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Make this week work
Move sessions within this week when plans change, keeping your workouts intact.
How it works
Download Chalk
Get Chalk on your iPhone.
Tell us about your lifting
Share your experience, goals and training days.
Start training
Follow your session and log your weights, reps and effort.
Keep progressing
Keep logging so your training can adapt with you.
FAQ
What is Chalk?
Chalk is an iPhone app that builds a personal strength training program and adapts it using the sets you log.
What is RPE?
RPE means rating of perceived exertion: how hard a set feels on a scale up to 10. An RPE of 10 means you could not do another rep, while 8 means about two reps left.
Who is Chalk for?
Chalk is for people training for strength, including lifters focused on the squat, bench press and deadlift. Your experience and goals help shape your plan.
How does my plan adapt?
Chalk uses your logged weights, reps and RPE to adjust upcoming sets and inform future training blocks as you progress.
What if I can't train on a planned day?
You can move sessions within this week using Rearrange Week, keeping the exercises and sets in those workouts.
Start with you.
Grow with Chalk.