When I Try To Download SonoAccess, My Device Displays the Following Error: “Not Compatible. This Application Is Not Compatible with This iPhone.” What Does This Mean?

SonoAccess requires iPhone OS version 3.0 or better. To check your OS version, complete the following steps:

1. Tap Settings | General | About.
2. Look at the version number. If it is 2.2.x or earlier, you need to upgrade your iPhone OS before you can use the SonoAccess application.