In addition to all that Beep Test has to offer, Beep Test Pro provides the following

Save Results. You can save test results
Multiple Users.
— Switch between “Enclosure” and “Name” mode
— Import names… sdCard, Cloud [Gdrive]
Enhanced Voice Cues
Photo. Snap a “linked” photo
Sort Results. By Name, VO2Max or Date
View progress … graphically, too
Export Results… by email
Paste-Special directly into GoogleSheet.
— Or load into other spreadsheets
Super-accurate timings
Option to run first level at 8 kph
Option to run 15 meter lap (default 20)
Work out, stay fit, enjoy life more!

Caution : Audio. There are tens of thousands of Android phone variants. Invariably, the odd one has issues. Validate audio (incl. Bluetooth) using the free version.