I was wondering the same thing. I only have an iPod touch 4, which means I can only get apps that require iOs 6.0 or earlier, which sucks until I can get the 5 in a few months... I was really disappointed that I couldn't even download the Spark People app, but I'm glad their mobile site lets me do the basic things.
Starting weight: 309.4
1st goal: 10.4 pounds, 299 by July 2, 2014 (met June 25th)
2nd goal: 30 pounds- 10% of remaining weight, 269 by October 15, 2014
| current weight: 289.4