Interesting statistics for iOS app developers: success of iOS apps is a very vicious thing. Nearly 400,000 of about 650,000 mobile applications in the App Store can be considered as a "zombie": they do exist, but are dead because almost no one knows about them. This is the conclusion made by the researchers of Adeven analyst firm. Below is the statistics and some App Store tips to promote the app.

iOS App Success Infographics

Over 60% of applications from an online App Store aren't downloaded and no one even judges them - they are simply invisible to users. The problem is related to difficulties in finding applications in the current structure of the store Apple. App Store does not provide a proper search and the only working way to discover new applications is to put them in the list of top programs. The experts say that now there are just a couple of thousands of applications on everyone's tongue, and behind them are mostly large studios that spend millions of dollars to be in the App rankings. But "unpromoted", or similar applications of the genre are almost impossible to find. Often, these programs get to the end of search results, and few people even know of their existence. The app development is a long and money consuming process. The devs spend tens or even hundreds of millions of dollars to create an app and the most common business model is to get hose money back by selling an app on the average price of $0.99. The simple math tell s us that an average App Store application should be downloaded 50-100 (or even more) to cover the expenses. That can't be done without proper marketing investment and indie labs mostly can't afford that. So you better pay attention to your app's marketing, that's a key moment. Note that in this year, Apple hopes to increase iOS applications visibility, the company bought Chomp startup, which is developing an advanced search engine software. Software from Chomp provides more accurate search results than standard search engines used in the App Store. TechCrunch called Chomp the only search service application that understands what makes the application and that the user wants.