Exploratory is essentially a graphical interface for the R statistical programming language. The Japanese-designed app was designed to "democratize data science."
The intent is to have a single tool that allows you to import then "wrangle" data from a wide range of sources, interactive data visualizations and analytics, and tools to communicate your findings including notebooks and dashboards.
I was able to learn the app basics quickly and often find "data wrangling" much easier in Exploratory than in Excel, though I still use the two hand-in-hand during the data preparation and import stages.
Here's a quick video introduction from the company...
Introduction to Exploratory from Kan Nishida on Vimeo.