Keep in mind that many free apps are ad-supported, so your child may be interrupted by the occasional pop-up advertisement. Also, be aware that the app offerings sometimes change, so if you find that the cost or availability of the apps mentioned above are different, there should be several other similar apps available for free. There are also several great apps available for 99 cents, and more are added to the app store every day. So, if you're looking for something different, you never know when it might pop up.