www.starfall.com (focuses on letters and letter sounds, free if you access via your computer)
First Phrases Lite (a free app that helps develop 3 to 4 word sentences) you can pay a fee and upgrade to unlock more sentences.
Little Writer (a free app that helps students learn how to trace letters) You can also buy a stylus to help students with tracing to use with this program, but not required.
TinyTapLTD(a free intro app, It has a yellow smiley face) This program allows you to create puzzles and games of your own. There is an additional fee if you want to upgrade.
****NEW Pete the Cat website http://www.harpercollinschildrens.com/feature/petethecat/ (clip and paste)
As with any websites and apps please check them prior to letting your child access them.
Check back often for additional websites and apps.