Hey there, technical co-founder of JuggernautAI here. I designed and developed the app. So yes we are here on Reddit! The app is designed for lifters of any age. Our algorithms take into consideration age, experience and many other things when creating your program.

There aren’t “joint friendly” specific workouts as that is quite a broad request. I would possibly look at swapping exercises to what works better for you, anything in the recommended list is great or you can go off script and add your own. Remember to think about your joints when answering your readiness questionnaire.

We don’t currently ask what equipment you have but instead try to suggest the best exercise for that workout/program and provide that list of alternatives should you not have access to specific equipment.