While sales of portable GPS units are dropping, more people are downloading navigation apps for their smartphone to get to where they're going.

Navigation tools are going high-tech, but you don't need to spend a lot of money. These days, the solution can be as simple as downloading an app to your smartphone.

Apps for iPhone and Androids are getting better than ever, with features including "reality view" to show major intersections or celebrity voices that you can download for some laughs.

For about $13, you can have your directions read by Homer Simpson, Snoop Dogg, Mr. T, Yoda or Darth Vader.

Android phones come with free Google navigation built right in. It also has turn-by-turn directions, just like you'd find on a regular GPS.

But if you're an iPhone user, you need to download an app to get GPS-style navigation.

Jim Travers of Consumer Reports says while there are plenty of free options available, you tend to get what you pay for.

The publication says you can't go wrong buying an app from one of the GPS giants like TomTom, Garmin, Navigon and Magellan.

"It's no surprise that the companies whose GPS navigators do best in our testing also make some of the top apps for the iphone," said Travers.

But expect to pay up to $60 for a quality, name-brand app. And know that the download can eat up a chunk of your iPhone's memory.

And no matter which phone you have, be aware that most have smaller screens than portable GPS units. And you'll have to factor in the cost of a mount and a charger to make the most of your smartphone navigator.

The price of apps fluctuates, but you can save by shopping for sales, or by limiting your download to a specific region.

See if you can guess the celebrity voices used in these unique GPS apps on tonight's CTV News with Lynda Steele…