I quickly built a small list of roughly 1,000 subs and none of them bought anything. In fact, I had to cancel the giveaway due to folks spamming entries. It's amazing the effort folks will put into trying to get something for free.
I learned the hard way that when you run free giveaways you're attracting folks who want something for free and buying anything is totally out of the question.
My products average $148 and I smoke tested a $10 product for FINAL validation to the list of roughly 1,000 subs. Not a single person was willing to plunk down 10 bucks, whereas over 300 have paid an average of $148. So, that was all the validation I needed that the list was garbage.
In the process I did pick up many social media followers, particularly on Twitter and their retweets have helped me to attract serious buyers...
So, if you're looking to pay for a service that will give you the ability to run free giveaways, and you expect to make money from the subs you gain - think again. If you're determined to run a free giveaway, run it yourself vs. paying any SaaS company for poor results.
Again, it can be a great tool to grow your social media following. That's the only application I see it being useful for honestly.
If you're starting out with zero social media followers for instance, these giveaway apps may help you to quickly gain followers so that FUTURE, real prospective customers come to your page and can say; "he or she is not just some person with 4 followers."
I would NOT recommend that you use it to get views or YouTube subscribers because there's no short cutting your way to lots of views and subs on YouTube. I'm seeing channels with millions of subs struggling to get 20,000 views because they went about getting those millions of subs the wrong way.
What do you guys think? Have free giveaways been worth the time, effort, and money for you?