iSchool is a study organizer and Timetable Schedule Planner (for schools and universities). Very minimalistic but has everything you need. Study schedule, notes are attached to classes, homework with notifications, grades, grades analytic. Take a pictures or use voice recording as a note. Very simple. Very useful.
cPMR is very simple and convenient Personal Medical Record organizer for iPhone, which includes: Convention child diary, personal medical record, Electronics medical assistant, Height/weight tracking and Many more.
CuteTag keeps being improved. Now you can take advantage of using CuteTag on iPad. Free version is already available for download on the App Store.