Hello there,
Couple days ago I asked if anyone would use a webapp that would help to allow change market cap and workout crypto coins price based on that. It seemed like some people wanted this tool so I decided to build it.
Feel free to give it a try: https://cryptoestimator.com/
I only tested it on major browsers and iphone yet, so if you find a bug, let me know and I will fix it. Data is updated every 5 minutes by reading coinmarketcap.com API.
I will try to contact coinmarketcap.com and ask them if they would want to implement link to my site on their site.
Waiting for your comments.