Thanks all for the really constructive and insightful responses - this is starting to gather steam
To keep things organised and make this "democratic" (!) I've set up an
ideas forum where you can vote for your favourite ideas and submit your own:
http://cleanerplanner.uservoice.comPlease (pretty please) can everyone who submitted an idea, and anyone who hasn't yet but is keen to have a say in the shape of this thing, please
visit the forum and
get voting and submitting!
If I can get enough confirmed interest, I'll get cracking on this
next week, and aim to have a beta ready by end of
October.
By voting or submitting an idea, you will automatically get
free and exclusive access to the beta (pre-release) version when it's ready, and an ongoing say in how the app looks, feels and works.