Interval
12 telas · Fitness e treinoTraining measured in zones, not in minutes
Twelve screens of an interval training app built on the one measurement that makes a hard session honest, which heart rate zone the work actually happened in, with every zone boundary, time in zone, session load and weekly total on every screen derived from a maximum and a threshold rather than asserted beside the timer.
O design system e as 12 telas em um único prompt. Cada tela também tem a própria página, de graça, se você quiser só uma.
Design system
Um arquivo, incluído no conjunto. Cada tela declara esses valores inline para poder ser retirada sozinha, e o build recusa uma tela que pinte uma cor que este arquivo não nomeia.
Cores
Escalas
O percurso
Na ordem em que alguém as encontra. É a sequência do próprio app, não uma lista de categorias.
Planning the work
4Deciding what today is for. A week that balances hard against easy, a session written as rounds rather than prose, and the editor that shapes it.
Doing it
4The four screens that exist for someone out of breath. Large figures, one decision at a time, and the zone ring that says whether the effort is landing where it was meant to.
Seeing it add up
4What a month of this actually did. Sessions behind you, the trend they make, the watch strapped to your wrist, and the account holding it together.











