Bancor is preparing to go stratospheric, and now has more than 59 cryptocoin projects committed to using it. The token changer app can now freely convert 11 different cryptocurrencies using Bancor. They have hired even more programmers recently to start adding more projects.
There is value in freely converting between currencies without the regular conversion fees on their app. I have been watching the volume pick up on the Bancor network through the coinmarketcap "markets" section on Bancor for the last two weeks. This is going to balloon once the newest rung of coins is released if this increasing volume is any indication.
tldr: Bancor has a working app to freely convert crypto and the list of coins on the app is beginning to grow and get more practical use.