react nodejs javascript devops machine-learning frontend backend web-app mvp full-stack developer-tools code-generation fitness-tracker user-authentication social-sharing goal-setting progress-tracking coslynx personalized-fitness mvp-fitness

react nodejs javascript devops machine-learning frontend backend mvp web-application developer-tools code-generation webdev fitness-tracker goal-setting workout-app progress-tracking health-and-fitness social-fitness coslynx mvp-fitness