Nice but with bugs

The app is cery good looking and has nice features for weight tracking. Actually it would be ideal... If not some bugs. Its often hard to enter older, higher weight, same problem with display; the app doesnt show the graph sometimes after changing dates (the graphs above the visible field).
Maybe its not adjusted well for iPhone 4, works well only on 5? I dont know, I regret!
Without the bugs, would be 5 stars!

marcindrzezla about PopWeight, v1.4