As one of its daily deals, Amazon Appstore for Android offers C25K: 5K Trainer Pro for Android
. That's $2 under the lowest price we could find for this eight week program that purports to get you running 5k. Deal ends today.
If you haven't claimed it yet, you can receive a $1 Amazon MP3 Credit for free with this download. (It can only be claimed once per Amazon account until December 31.)