I use Chartbuddy for client presentations where I need to visualise financial data clearly. It's way better than the default Google Slides charts and saves me a lot of time formatting.

There was no way to create waterfall charts in a short time-span in Google Slides, and I needed waterfalls for all my drill-downs. So this has been a major time-saver

Chartbuddy is very intuitive and similar to the chart building tools that I had access to as a consultant at EY-Parthenon. When I left consulting, it was maddening trying to build charts in google slides without the advanced functionality that I had become used to for data displays. The team is very responsive to feedback as well.