The app, screen by screen
Fifteen real screenshots from the shipping iPhone build: building a session, running it on the full-screen clock, and reading everything it recorded. Free to run; Pro is a single one-time purchase.
Start the day
Training opens on the Workout of the Day: one session, three difficulty bands, and live time targets that scale with the band you pick. Below it, featured programs and your own saved workouts.


Run the session
A full-screen clock shows the current station, the block you are in and the whole session at once. Rest gets its own screen with what comes next, so the phone stays on the floor.




Build it your way
Define the workout the way you would write it on a whiteboard: stations grouped into blocks, blocks repeated in rounds, rest where it belongs. Band targets update live while you build, and any workout shares as plain text plus a link that imports it.



Review everything
Every session becomes history: totals, per-station splits and time in each heart-rate zone. Pro adds session comparisons, and per-round heart-rate traces with drift, decoupling and fatigue per exercise.





Make it yours
Dark, bright or follow the system. Pair a heart-rate strap once, set your zones, and let workout reminders skip the days you already trained.

The difficulty bands on these screens are the same ones the band calculator prices, and the presets shown ship with the app; the preset library lists them. What Pro adds on top of the free run experience is on the Pro page.