Movement for ages 10 to 100: inside JESSIE-OS's five age-band modes

Fitness apps are built for people who already exercise. JESSIE-OS is built for the other 90%: the ones who sit for nine hours, know they shouldn't, and for whom a '30-minute workout' is not a small ask but an impossible one. Its core feature is the micro-movement intervention — short, frictionless, contextual bursts delivered where the sedentary day actually happens: at the desk, in the kitchen, during the school run.

The five age-band modes are the feature no competitor offers. A twelve-year-old gets play-shaped movement and safe progression; a desk-bound thirty-five-year-old gets posture rescue and energy management; a seventy-year-old gets balance, strength preservation and confidence — same system, radically different experience, tuned to what each body needs and each mind responds to. Everyone else optimises for the 25–40 demographic and abandons both ends of life.

Around the interventions sits the behavioural engine: streak psychology that builds habits without punishing a missed day into abandonment, wearable integrations that read your real activity instead of your intentions, and AI coaching metered through ACUs — intensive when you need it, silent when you don't, billed only for what you use.

Movement that fits real life is the feature; everything else is delivery. Discover Jess Move — and if you run a school, an employer wellbeing programme or a health service, the age-band architecture was built to serve whole populations, not just individuals.