Did you read the reviews ? Maybe because the bad guys do not want you to use it. You need to underestand that there are a lot of people paid to have an opinion on the internet.

Some of the (dumb) reviews don't change the fact that Apple's app requires you to perform manual scans and doesn't alert you if you're being tracked. Only iPhones do that.

If that was the case why don't the non-Apple apps have the same problem then?