1) EvenBetter(NumberPad): T9 number pad keyboard - would never have moved to Android without it.
2) Nova Launcher Prime: Customises and simplifies everything. Absolutely love it!!
3) OverlayLauncher: Highly customiseable side app launcher which fits in with my minimalist tendencies perfectly.
4) RemindMe: A simple-as-they come reminder app.
5) Display Brightness Pro: I?m not in to auto brightness functions, and a simple swipe on on its designated area of the screen instantly turns the display brightness up or down according to my needs.