Firstly, the product name and its description shall be optimized to fit App Store. Secondly, it is desirable to maximize the users’ awareness of your app. Reviews made by popular bloggers and placed on most visited web-sites is one the most efficient promotion tools. One can also engage PR-agencies to write and post press-releases. Practice shows that a professionally written press-release is favored by editors. Thus, an article covering your app will appear in many magazines and on-line editions devoted to mobile apps, with an overall result of increased number of downloads. Thirdly, it is a must to engage your audience through social means. Maintain the Twitter of your app, add commentary notes on the product on topical forums, and create grounds for your product discussions on social networking sites! For example, adding “Like” and “Share” to your app on Facebook or other sites will enable everyone to tell his friends about it. Taking into account that the friends number of many users reaches some hundreds this is a very effective promotion tool similar to “word-of-mouth” advertizing. Moreover, be aware of maintaining the feedback: it is very likely you would receive a useful hint. Fourthly, be aware that the lion's share of all mobile apps downloads is free. Thus, even if your are focused on selling your app make sure you have a free version with a limited functionality that will from time to time offer going to a pay version without any limitations. A user is prone to pay for additional functions to an app they like rather than to pay for something unknown. Fifthly, do not forget about updates! This allows you to regularly enter the list of newly designed products and in the long run to increase the number of downloads. New levels of games, new functions, errors correction – all this can be the ground for making a new version. The only “but” – is be careful with “empty” updates since they can simply irritate users. Overall, none of the listed tools taken separately cannot guarantee a success. Therefore, be ready for a long fight promoting your product and use all available possibilities. Good luck!