- 1). Choose a platform for your app, such as iPhone, BlackBerry, Android or Windows Mobile. While many apps are available through more than one platform, if you've never made a smart phone app before, it's wise to start with one platform and move on to others once you have been successful. The best platform for you is the one you are most comfortable with, such as the type of smart phone you use most frequently.
- 2). Browse your platform's app store for ideas on applications. If you already have an idea for an app, check out the competition. Most app stores are divided into categories such as "Games" or "Lifestyle." Find and download a few apps that appear similar to yours, then take notes on how yours will stand apart and what else it will offer customers.
- 3). Register to be an app developer with Apple or BlackBerry for the iPhone or BlackBerry platforms, both of which are free. If you are interested in Android or Windows Mobile, there is no registration required. See Resources for these platforms' online development centers.
- 4). Download the guides and tutorials available on the online development centers to read specific instructions on how to get started on your platform. Your platform will also have specific instructions on tools and software you will need. In each case, you will need to own the type of smart phone you are developing to test your app, as well as the latest version of your platform's SDK.
- 5). Test your app frequently throughout the creation process to check for bugs and other issues. After you submit your app to your platform, you can make changes and updates in future versions, but customers can rate and review your app on the app store immediately, so the first version should be as solid as possible.
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