There is no mass export of data feature. Use programs such as Zapier.com or Make.com to automate data extraction.

The OnBeat app does not have a feature to mass export the data to a CSV or XLS file.

The OnBeat app emails the account owner at the end of each class, including each client's workout summary.

It is possible to subscribe to Zapier.com and extract the data from the summary emails. You can then import the data into other programs, such as Google Sheets and hundreds of other programs.