NO. it is not. and you should stay away from any kind of "signal" service in my opinion. they all out there to rip you off and take your money one way or another.
there is an old stock market saying that goes like this: if the market experts were so expert, they would be buying stocks not selling advice".

people sometimes share their speculation with each other though. like on tradingview.com but you shouldn't confuse that with "signals".