This app was mentioned in 4 comments, with an average of 4.00 upvotes
I like it. Personally I like Parkmobile a little better, but considering how often I come down to Fells, this makes it SUPER easy and convenient. The app could use some improvement, but with a smart-watch, it's easy to keep track of time.
Yeah, the entrance is on Canton street westbound, right before Good Latimer.
And you need this app.
Here is the app you are looking for. Not sure about the iPhone equivalent.