This RMarkdown / flexdashboard project generates an A/B/n sample size estimator with visualizations for illustrating the impact of adjusting various settings.
The code relies on Shiny, so it can either be run locally, or it can be published to an environment that has a Shiny Server on it. To see the code running through shinyapps.io, visit https://www.searchdiscovery.com/sample-size-calculator/.
In order to get tooltips on one of the visualizations, this code uses ggiraph and rvg. If those aren't installing, check this post. ggiraph introduces "interactive" geoms.