No I'm not worried. I just tried about 10 out. Many of them you need to connect to the wifi to use.
Some cool ones are the flashlight (one was free, another flashlight app said it was free but it gave me a warning that I was about to purchase something so I canceled it)
The leveling tool is very cool, as is the Breakout type game.
There is also a scratching one, like a DJ, but I thought it would let you play your own tunes, but it has a few generic tunes (like hip-hop) programmed.
The Spanish, Italian and French translators are very cool. This is an app where a speaker would come in handy in a foreign country because it pronounces the phrase.