New training journey

Hello! I have been doing Freeletics for about 2 months now. The app is now telling me that my training session “Start Strong” is over and I should choose a new one. I am doing calisthenics at home and i really liked this training session for all the compound exercises, especially the “core” part of them. The app is now recommending me “Ultimate Strength” and “Weights-free Gain” and i don’t know which one to choose from them. My equipment is rubber bands and dumbbells but i can also buy some kettle bells if needed.