Agenda - A date-focused note taking app for both planning and documenting your projects.
Focus To-Do - Be focused and make things easier.
ToDoBook - Turn your Facebook (& other social media) News feed into a to-do-list.
To-Do Calendar Planner - To-Do Calendar Planner app comes up with a scrollable calendar to enable users to accomplish all your study and other daily life tasks while saving some extra time for other activities.
Todoist 10 for iOS - A completely new Todoist for iOS
TimeTable++ Schedule - TimeTable++ Schedule is an app by Happy App Studios that helps you in uploading your Schedule of exams to receive a full study calendar to complete your revision before the exam day without stressing your mind.