Mobile App Marketing Agency: A way to get the word out App success will always be combined with hard work, great marketing strategy, skill, and excellent product. If you want your app to sell, you need to get the word out that it exists. in Public bookmarkswith mobile_app_marketing_agency Note: App success will always be combined with hard work, great marketing strategy, skill, and excellent product. If you want your app to sell, you need to get the word out that it exists.