It's completely safe as previously mentioned in this thread, there is some misconception about it not working properly or being genuine, but it does come from a genuine company and it does work... Although I would personally go for a different product, even a free one, like Avast Free or even Windows Defender.
Honestly it is your decision on whether you want to use it or not - we as members can only suggest which products you should use based on our own experience with them/favourites - each product may work differently on other systems due to hardware differences (in terms of performance) and every security product has a good and bad day. Therefore, I recommend you use the free version first and if it all works well and you like it then you can upgrade.
The thing I don't like about IObit is that I do not believe there is a free trial to the paid version to test it's paid features first, but only a free version to test those features... Correct me if I am wrong (anyone reading).
You can download the free version from the following link:
IObit Malware Fighter, Free Anti-Malware & Trojan Remover - IObit
You can learn more about the premium version from the following link:
Buy IObit Malware Fighter PRO for Spyware, Ransomware, Trojan & Malware Removal - IObit
That being said, I believe the paid version uses the Bitdefender engine as well (signatures) for detection, too. Therefore, the detection on the paid version will definitely be improved.
Make sure to watch out for those offers like
@Spawn suggested
IMO IObit have been pretty quiet recently, I haven't really heard of any news about them for a pretty long time. They had some downs in the past but that is all long ago, they are much better these days.