Useful app that records video with your speed. You can playback the video or export it to your photos roll, where you can upload to YouTube or transfer to your computer.
Set yourself an alarm that speaks the current time when it goes off. You can be woken in the morning with "The time is 8:00 AM" or be reminded when you need to leave work with "The time is 5:00...
This app shows you the position of satellites. If you are installing or adjusting a satellite dish it shows the direction to point it for your chosen satellite.