Actually both of them shouldn't be trusted Freebtc(dot)pro is an obvious scam as it claims that you can generate bitcoins by just clicking a single button
which is just beyond impossible because if that's true, people wouldn't spend their time mining (
and that is not how it works) in addition to that how is the owner even earning when he's just basically giving away money because when I tried it the site claims that I can get .1
BTC if I deposited 0.0045
BTC. The reason is he's earning through people's deposit without giving a single cent back.
(
Stay longer and you'll see that the chats are just repeating over and over again)
As for Btc-miner(dot)net, It seems like its a bitcoin mining software for PC and laptop. Sorry but if you're not gonna use ASIC's bitcoin mining is not even worth to try as it's no longer profitable and yet the site claims that you can earn 0.05 BTC in 4-5 days
But actually, the software itself is not open source and the site is not reputable enough so that should be an enough reason to stay away.