What are some good Chart Libraries for Mobile Apps

Can anyone please suggest a good Charting Library with specialty in Mobile Apps?
I am currently using https://github.com/chinmaymk/angular-charts Angular JS +D3 based charting. But, I need something more powerful.

Note: I am not working on real time data.

Im quite happy with http://tenxer.github.io/xcharts/

But this is really powerful: http://www.chartjs.org/

Don’t know about performance issues though.