Looks like a good effort and the features sound appealing. The landing page is good too - concise, to the point with the right amount of media. Suggestion: Offer a free trial version. It really doesn't hurt you because 'cleaning' up a Mac is a repetitive task. Those who appreciate it will buy it. Those who don't want to buy your software, will anyway never pay for it. But if they have used it, they are more likely to recommend it to others. Potential customers are also more likely to buy your product after seeing it in action. It also makes it easier to recommend it to others.