This is simple & pure manager for your 'idea'.
It has relation ship between Subject(Mother) and Idea(Child).
The view is ordered by "Date".
Swipe Right from [Date] to [Subjet , Memo] , open Edit View.
Andorid OS 4.0.3 SONY TABLET P.
Andorid OS 4.2.2 KYOCERA SKT-01.
Android OS 4.3 Galaxy SIII α.
Android OS 7.1 Nexus 5X