Longer Appshopper activity graph?

I've found the Appshopper 30 day activity 'sales'(chart position) graph, with the price drop information very useful. It's a shame it only lasts 30 days though - does anyone know of a simple way (or other website) that lets me view longer periods?

 

Ah, came across it from another post on here

https://www.kukapp.com/