Chalk & Chain

Strength training

A trainer in your pocket.

It plans the week and coaches the session. Start without an account. Your log lives on your device and works offline.

Use it in your browser on any device.

The work stays with you.

A plan that changes with you

Each week keeps the same days and rep ranges, then swaps in different lifts for the ones you just did, so it isn’t the same week on repeat.

Built for the room you’re in

Full gym, home with dumbbells and bands, or bodyweight. The plan only gives you work that room can do.

A coach that hears plain language

“I can’t work lower body today.” “Can we skip shoulders.” Or build the day’s workout yourself, from search or the library.

Rest that still fires in your pocket

In the Android app, the rest timer goes off with the screen locked, over Bluetooth, even if the phone is silent. Mid-session, replace or remove a lift without starting over.

Your log, your call.

Plans, sessions, and settings live on your device, and the app works without an account. Sign in with an optional account and your log syncs to your other devices. Sign out and it stays on this one.