iProcrastinate

No where near as feature packed as Schoolhouse, but some people may not want all the features of Schoolhouse and for that, this free relatively light app will be great

Features:
Simple, Effective GUI
Create/Edit Subjects and Tasks
Break Down Complex Tasks into Steps
Create Quick Tasks Instantly, in Any App!
Automatically Be Notified of New Updates
Link Related Files to Tasks
Archive and Restore Old Tasks
Sort and Search Tasks Easily
Gawk at tons of other spiffy features!

iProcrastinate Homepage