Color-coded

Awesome Note - $3.99

https://itunes.apple.com/us/app/awesome-note-to-do-diary/id320203391?mt=8

Organization
Chore Pad - $4.99

https://itunes.apple.com/us/app/chore-pad-hd/id384854237?mt=8

To-do List
ColorNote - Free

https://play.google.com/store/apps/details?id=com.socialnmobile.dictapps.notepad.color.note

To-do List
Evernote - Free

https://itunes.apple.com/us/app/evernote/id281796108?mt=8

Organization
Everstudent - Free

https://play.google.com/store/apps/details?id=com.olegvaskevich.everstudent&hl=en

To-do List
Hemingway - Various Prices

http://www.hemingwayapp.com/

Middle School
Inspiration Maps - $9.99

https://itunes.apple.com/us/app/inspiration-maps/id510173686?mt=8

Organization
My Class Schedule - Free

https://play.google.com/store/apps/details?id=de.rakuun.MyClassSchedule.free&hl=en

To-do List
Overlays! - $6.99

https://itunes.apple.com/us/app/overlays!/id868499627?ls=1&mt=12

Color-coded