I can actually do this with Simple. I have been disappointed with their velocity of new features, but they do that really well with their "goals", I really like the feature.
I was hopeful simple would have become this magic solution but they just released the concept of savings funds that transactions won't pull from after waiting seemingly 7 years for it. Along with their strange "no long term travel" policy, I'd wouldn't recommend their service for anybody outside out college.
I've been Simple customer for years- never heard of this "no long term travel" policy- can you elaborate?
Edit: I just looked, and they indeed state that they may have close your account if you are traveling for "a very long time" or moving out of the country... odd, I wonder what their definition of "a very long time" is?