You are asking people to QA a commercial product for you. Are you paying them? This is a job advertisement.

I beta test things all the time that otherwise are paid commercial products. I do a lot of beta testing for BetaBound. In fact, I was one of the fortunate ones to beta test the roku when it first started. This is not unusual, to ask people that are willing, to beta test a product. Currently I am beta testing a 'rumba' type floor sweeper. Can't go into details because of non-disclosure. Usually, after the beta test is over, you are allowed to keep the product.