What apps or tools do you use to stay organized and manage your time better?

I use Pomofocus as a focus timer to stay on track with study sessions, using the Pomodoro technique to break work into 25-minute intervals. Todoist helps me organize assignments and deadlines for task management. Google Calendar keeps all my class schedules and events in one place, with reminders so I don’t miss anything. I also use Notion for detailed note-taking and project tracking, and Forest to stay off my phone—each focused session grows a virtual tree, which keeps me motivated. What tools or apps do you find most helpful for staying organized?