Beyond helpful.

If youre new to London, avoid looking like a noob by using this app. I used it - especially the route planner - to survive. Enter the two stations you need to get to, and this thing plans it out, down to which stops in between, which direction, etc. And if you dont know which station is near the landmark you want to get to? No big deal, man. The app lets you search stations and route plan by landmarks, which is great for tourists. I also noticed it didnt require internet/ data to use, so when youre in the tube go ahead and use it too.

On my second day in London I needed to get from Kenwood House back to Bayswater, but my phone had died. It was 11:30pm, the last train was looming and I was so lost. I cried, longing for the helpfulness of this app.

Jess84 about Tube Map - London Underground, v5.3.3