Has anyone found a study planner that isn’t too rigid?

My classes have been getting harder to keep up with, and a normal calendar or to-do list doesn’t really feel like enough anymore. Most study planner apps I’ve tried are okay for making a schedule, but they feel too fixed. Some weeks I need 25/5 pomodoros. Other weeks I need longer deep work blocks. Sometimes I just need reminders before class, or a checklist for one specific course that’s falling behind. The annoying part is that I end up using a calendar, a timer, a notes app, and a task app all at once. Then the setup itself starts becoming another thing to manage. I’ve been trying Macaron recently because it lets me make small custom mini apps from what I ask for. So instead of forcing everything into one fixed planner, I can make a study schedule, a pomodoro flow, or a course checklist depending on what I actually need that week. Still testing it, but I like the idea of a study system that can change with how I study, instead of making me adapt to the app. Has anyone else found something flexible like this for studying?