The on call app is good for people who have an IPod Touch or IPAD without data plan or where data plan is sketchy - the other thing is that even though I have logmein I find it difficult to use my Iphone (IPAD is great) and sometimes just having the basic chart would be handy. It would be best if you synched every day (probably unrealistic), just another option for people. That being said I was too cheap to download as I already have logmein.
