I was looking for a tool that can help me easily create beautiful charts from the data in the spreadsheet and found OneCharts. The good thing about OneCharts is that it provides lots of templates to create charts from and those templates are so well thought out that generally, we don't need to do major customization to them. It's so much quick to create charts and represent what truly the data speaks about. One more good feature is that they have a REST API to create and update charts which might be useful to automate the general use cases around charts and make it effortless to implement features around charts.

I like how simple it is to make charts with one charts. I can easily export my charts from images or excel and make charts out of it. I have frequently used it for my presentations.

The UI and the way charts are created is very good.