Are online training plans personalized?

Yes, all training plans are fully scalable to your personal swimming level. You can determine your swimming level in your personal account (https://swimgym.com/users/edit), and after you have entered your level here, all workouts will be set to that level. However, if for a certain practice it is too hard, or you feel good and want to do more, you always have the option to modify that workout by scaling up or down depending on your situation.