You can set it to stop using Location Services, or to only show certain apps. They are categorized by age, so you can set it up so that the only apps that show up are apps approved for 4 year olds and below. I am not sure who does the ratings and if all of them are correct, but it is better than nothing. If you are not sure which apps are good for different ages of kids you can take a look at Common Sense Media. They offer nonpartisan reviews of apps that are searchable.
I recommend that you spend some time going through your phone settings to see all of the things that you can do. It is a great way to make the phone your own.
Here is a link to a slideshow that has additional ideas about setting up the restrictions on your iPhone or iPad.