Huh. Mapnificent is exactly what I've been looking for recently after a change-up in local transit routes. It would certainly make it easier to eyeball "short trips" when considering the intersection of multiple transit modes, assuming it's accurate enough.

Walkscore uses a similar method for showing how long public transit would take from an address

https://www.walkscore.com/

It's a nice idea, but London is hopeless - looks like they've missed out the rail network completely. I guess other cities may be better, but you really only need to miss out one key route or mode and you change the map completely

I reckon it is because tfl is the data provider, and the rail network isn't a part of that?

I still found it very useful when looking for central accomodation with short commutes (<20') to centrally located places.

More links for you:

* Europe - https://www.washingtonpost.com/news/worldviews/wp/2015/06/05...

* A distorted map from Japan - http://chaudron.blogspot.jp/2009/04/kohei-sugiura-snakagaki-...