There isn't an iPhone model called "iPhone OS". iPhone OS refers to the operating system the iPhone, iPod Touch, and iPad run. To answer the question, each of these devices are only limited by the amount of available space remaining in memory. Each application (or app) is a certain size to download and install. Typically, the size for the download is smaller than the finished installation. I do believe each app in the App Store states the file size, so that should help determine how many apps can be installed. Also, iTunes on PC or Macintosh will give a graph stating the amount of used space, and the amount of free space remaining on any specific device.
iPhone apps work on iOS devices (iPhone, iPad or iPod Touch) they will not work on a Mac running Mac OS X 10.7 (Lion) or any other Mac OS X version
Although iPads can download apps made only for iPhone/iPod Touch, the iPhone can only download iPhone or iPhone/iPad apps. Apps made only for the iPad do not appear on the App Store. Luckily most of these apps have an iPhone counterpart such as Angry Birds (iPhone) and Angry Birds HD (iPad only).
Android, Symbian, Blackberry OS (RIM) : java iOS uses OPP-C ( C#/C++)
Not with the current firmware. However, iPhone OS 4.0 supports this feature and will be available for download in the summer.
No. Some apps have been ported to OSX and you can download them from the new Mac App Store (comes preloaded on all new macs, comes as a part of Snow Leopard.) But you can't play straight iphone apps.
No, it doesn't work as they're made strictly for the iPhone OS. You might be able to do it in the iPhone Simulator in the Dev SDK, but not really 100% on that one.
iPhone OS. No seriously it's actually called iPhone OS.
its different OS dude!!
The maximum amount of apps that can be put on the iPod Touch is 180. You cannot exceed this amount. However, this cap will soon be raised to 2,160 apps with the addition of folders in the new iPhone OS 4.0 software update being released in the summer.
Unfortunatly you can't. This is because on the app store, the apps are written only for the IOS (Iphone Operating System) whereas the apps on the android market are written for the Android OS. The Wildfire uses Android.
The iPhone main browser is Apple's. Safari is the main browser for any iPhone.
The OS 8 is for the iPhone 4. The iPhone 4 is a really popular phone.