I know this is going to be of no help, but I could swear I recall seeing a post on the forums in the past week or two from someone that had created an app for just this purpose. I did a quick search and found nothing, so it could just be that I am losing my mind.
Edit: Did not find the post I thought I saw, but did find this. It is from quite a long time ago so I tried it out and it does seem to be still functioning.