
Coaching workflow workbench built from personally serving 40+ gym members.

Fitness OS is a coaching and training workbench built by product manager Korey Wang Tianru (Class of 2027, Beijing) from real experience personally serving 40+ gym members. It structures daily session execution, client progress tracking, and coaching workflows. Try the live interactive demo at https://korey2028.tech/fitness/app/?demo=1&lang=zh and read the full product case study at https://korey2028.tech/work/fitness-os.html.
Personal trainers, gym coaches, and fitness studio operators managing active member rosters.
Coaches managing 40+ gym members juggle scattered chat logs and spreadsheets during live training sessions.
A focused daily training and member workflow workbench designed on the gym floor.
Built directly from hands-on experience personally coaching 40+ gym members.
Fitness OS is free to use.
Fitness OS runs on Web.
Fitness OS launched on IndieLaunch on November 1, 2026 in SaaS, Productivity. Visit Fitness OS
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