Looks interesting Aero Notam
A much easier way for flight planning and GAR if you do a lot of flying IFR or overseas is to use RocketRoute
A very useful app for free approach plates is Circle to Land
For getting Sunrise, Set I use this app.
Much less cumbersome than the whizz wheel is this E6B App
And for getting airfield information about small strips Airfield Cards is my favourite.