jefit - I have been using this currently (the free version) and it has been fantastic for tracking all my stats.
It is handy for timing rest between sets and this product also allows you to see which day which lifts need to be done on.
It's also really good for progression as it tells you the 1 rep max based on your current stats with information on how to beat that 1 rep max. There are also numerous routines that vary in type and range in difficulty from beginner right through to advanced, so, if in the future you wish to change things up it is all very straight forward. Included with the product is also an online site that links directly to your device, so you can browse your stats and other routines on the web as well as your mobile device.