Kaizer is an AI-powered training platform for personal trainers and coaches. Trainers build routines from a library of 1,500+ exercises, or let the AI assistant draft the first version from each client's goals, equipment and limitations, then adjust sets, reps and loads after every logged session. Their clients train from the Kaizer app for iOS and Android, where they follow the routine, log every set and message their trainer. Kaizer also covers client management, progress tracking, payment control and a marketplace where trainers get discovered by new clients. More than 1,200 trainers across 20+ countries use it, in Spanish, English and Portuguese.