We want to implement drill down charts for our iOS Swift App and Android App, we have done some research & implementation of different charts
For iOS https://github.com/danielgindi/Charts
For Android https://github.com/PhilJay/MPAndroidChart
but we unable to find drill down charts there.
Also we have license for FusionCharts https://www.fusioncharts.com/features/linkedcharts-for-drill-down/
but for mobile apps iOS and Android respectively UX (User eXperience) not good as expected because they provide implementation solution with WKWebView.
So is there any way to implement same with best user experience and good budget?
Drill Down Charts
Definition: according to IBM
Drill down charts are used to give another level of detailed reporting to charts. The chart must be a bar, pie, or ring chart. Users click a specific bar or segment of a chart to drill-down to a more detailed report.
Drill Down Chart Example