Make it yours.

The app you open every workout should feel like your app.

Start with five classic themes, included free. Explore more looks and custom appearance controls with Stack Pro.

Same workout.
Different personality.

Choose a look to preview an actual Stack screen.

Forest: a clean dark look with a teal accent. Included free.

Previews show dark appearance. Theme changes happen in the app.

Stack Home screen in the Forest dark theme
Actual Stack screen with example training data.

Find your everyday look.

Forest, Navy, Maroon, Walnut and Stone are included free. Pro adds softer palettes, brighter colors, deeper dark themes and controls to make your own.

Light or dark, your workouts and familiar controls stay in place.

Explore Stack Pro →

Your next workout.
A little less guesswork.

Start logging free. Add Pro when you want more direction.

Download on the App Store

For iPhone and iPad. Optional in-app purchases.