I also have used Simple in the US when I lived there and I loved it, was so happy to have found Starling after returning.
I wanted to add, in addition, something Simple does which Starling does not (yet) is report on a total amount of how much money is being transferred into your goals per day.
I have 4 goals.
Goal 1: £4 a day
Goal 2: £6 a day
Goal 3: £35 a week
Goal 4: £100 a week
which breaks down to approximately £29.20 per day or £876 per month.
The reason this is useful is because I can then visualise how much of my wage is being allocated to goals and whether or not I have room to contribute more or whether I should contribute less.
The date thing however is also a fantastic idea and I really hope to be able to use that again like I used to with Simple.
Keep up the great work guys! Love what you guys do.