What makes the best gym app in 2026? Tracking, progression, and nutrition in one place

When people search for a gym app, they usually end up downloading three separate tools: a workout notebook like Strong or Hevy to log sets, a calorie counter like MyFitnessPal to log food, and a spreadsheet or PDF to figure out what to train next week.

The problem with splitting your training across three apps is that none of them talk to each other. Your workout logger does not know you only slept five hours or missed Tuesday's session. Your calorie app does not know your bodyweight has been flat at 82.4kg for two weeks.

We built OneCoach to be the all-in-one AI gym app that connects the entire loop: Track, Progress, and Connect. You get a personalised 12-week training programme written around your equipment and injury history, set-by-set progressive overload calculated while you train, adaptive calorie and protein targets from weekly weigh-ins, and Lift Together groups that keep you showing up.

Best of all, OneCoach Free is £0 forever for your training plan, workout tracking, progressive overload, personal bests, and community — with OneCoach Pro unlocking live adaptive rewrites and full nutrition.