bellos started with a popular workout app that one of us used. The training was good: heavy days, light days, more variety when the weight came down. The app wasn't. It kept losing sets, its plans ignored what had actually been lifted, and there was no way to look back at past workouts.
So we worked out what the method actually was, wrote the rules down, checked them against the research, and built the app we wanted. It's quiet, it remembers everything, and it gets better every time someone tells us what's missing.
