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When designing the app, aim for great usability, good looking interface and excellent performance.

Users are great source of ideas. Involving them from emerging idea to released iPhone app is an important success factor.

Before starting to develop, analyze the competing iPhone apps to identify the strengths and weaknesses. Then do better than them.

What does a low rank mean for an #iPhone app? Is the app really bad, it's great but the demand is low, or the marketing is poor ?

A developer must figure on his own what's the right price for his app, i.e. what price maximizes the long-term revenue.

Give money to the competition ? Why not, if it's for the good cause. Buy your competitor's app to develop an even better app.

Creating successful apps is about understanding what users want, not solving a problem only you have or doing something only you like.

Design your app around a single idea. Focus on a limited set of functions that accomplish a precise, well defined mission.

When designing the apps, aim for simplicity, efficiency and accuracy.

Great design means being able to use the app without asking yourself questions about what's the next action or what that button does.

Give very careful attention to design if you want to create apps that offer special user experience.

Basic ingredients for a great app: smart concept, intuitive interface with polished graphics, small, but ingenious set of features.

Aim for designing an uncluttered interface for your apps. This could mean fewer functions, but less is always more for an iPhone app.

Browse competitor apps user comments to find new ideas to improve your app and always be one step ahead the competition.

Carefully choose the #AppStore categories where you want your app to be. Find where the similar apps are and try to maximize exposure.

Frequent updates show to potential customers that you still offer support for your app and they can purchase it without hesitation.

Send the press release to major app review sites and blogs. Bloggers who already know you are usually more receptive.

Add a section to the web site where to provide downloadable marketing materials: press releases, app icon and logo, screenshots.

Write and publish press releases for every important event: app release, update release, sale offers, etc.