The numbers are astounding. Apple has sold 50 million iPhones. More than two billion apps have been downloaded from Apple’s apps store. At last count, there were over 85,000 apps available.

Apps are little programs that add fun and features to the iPhone. They’re available for just about anything. Following are free apps no self-respecting iPhone owner should be without. To find my favorites, open iTunes and search using the name of the app.

Google Mobile

Google Mobile links to Google’s online services. Quickly access documents, news and more.

But the app’s real draw is the voice search feature. Search your phone, the Web, maps, news and other sites. Just speak your search term! Google Mobile remembers recent searches. That makes it easier to find information you located previously.

Cheap Gas!

Cheap Gas! puts gas prices at your fingertips. Use your location to find the cheapest gas. Or, search by ZIP code. Cheap Gas! shows prices for all grades of gas. Sort results by distance or lowest price. It will even map a route to a selected station.

Offender Locator Lite

Offender Locator Lite helps you keep your family safe. It shows sex offenders living nearby. Enter an address or use your current location.