You may have heard about “Virtual Earth Via Seadragon on iPhone,” a Seadragon browse app that allows to browse Photosynth and Virtual Earth on the Apple iPhone. Now, a new application called “iSynth” developed by Greg Pascale is released that brings all the eye candy of Photosynth to the user experience of iPhone making it a fantastic way to explore synths. You can search, browse and view synths right on your phone effortlessly. Tip: While using iSynth, for a quick description of what a button does, simply hold it down for a moment and a description will appear (unless you've turned off the "Description Labels" option in the settings menu). If you hold any button for longer than a moment, it will not press when you release it.

More info: iSync for iPhone (Download App Store link) | Full Article