LOL bro, you nailed it. That's the only websites you need to bookmark if you want to learn how much fees you needed for bitcoin and ethereum. I don't think that a bot or something is needed.
This app is interesting, but for me the most precise and easy is what has become the standard on the web MEW (for ETH).
For me a little more expensive is not a problem as long as tokens / coins are transferred quickly because at certain times we need the speed and timeliness to transact.
I suggest to go to
https://ethgasstation.info as posted above if you are using MEW wallet so that you can sent your transaction immediately. MEW allows dynamic fees to be set, and that website can guide you how much you are willing to spend, no need to be expensive in ETH.