I used the subreddit that was related to my app. I gained about 10,000 downloads from being on the Front Page there, and now I average about 150 downloads a day

I used the subreddit that was related to my app. I gained about 10,000 downloads from being on the Front Page there, and now I average about 150 downloads a day. I would say that free marketing techniques (basically embracing the online communities) are the best way to share your product - especially apps.