The author of this app has done a great job making this app visually appealing and the basic functionality is ok but needs some tuning up.
On the input page there is no manual Y-axis scaling so sometimes you must repeatedly drag the dot to enter a weight when the auto-scaling wont cooperate. The input system is different and sorta fun but unquestionably slower than a normal keypad input. CSV importing is non-functional despite success messages, although exporting does work well. Lastly on the viewing page there are no labels on the axes! This makes it hard to see whats going on. Perhaps a tilt to view an alternative chart would be a good solution?
Teh_trout about PopWeight