The four important steps in i-Phone / i-Pad marketing are:

1. Develop a Solid Marketing Message.  Every activity ie., from your icon to description, contributes to your overall marketing activities. Make Your App’s Icon Jump. Name should be short, simple and descriptive. Description must be short, to the point on the App store and your product website. Make sure your app conveys the unique message in a split second, so that, your app can stand against your competitor’s app.
2. Deliver Your Message to the Right Audience:-  For maximum exposure and effectiveness, you should convey your unique message to the right audience. There are many ways to create demand for your app among the right audience, such as press releases, blogs, reviews, banner ads, and much more. Make your customer believe that they can’t live with out your app. This will help to convert app store peepers in to paying customers.
3. Price Your i-Phone/i-Pad App Right:- You need to set your price carefully. Before setting your price, you should review your competitor’s apps and its price. If you are pricing higher than their apps, make sure that your app should contain more features than theirs. You can always price high for utility apps. Also you should calculate your break even download.
4. Implement a marketing plan and launch your app:- Create effective marketing campaign for your apps. Always create a plan prior to the development of your apps. The marketing plan is your guide for how to position, price and sell your app against a host of competitors. Your plan should include a definition of your target audience, a list of key competitors, a plan for releasing your app, and a calendar of marketing campaigns.

Marketing is not a single event but a series of events that persuade the buyer to take a look at your app and then buy it.