Quarterly report pursuant to Section 13 or 15(d)

Stock compensation expense (Details)

v3.22.2.2
Stock compensation expense (Details) - USD ($)
 3 Months Ended
Jul. 31, 2022
Jul. 31, 2021
Share-Based Payment Arrangement [Abstract]    
General and administrative $ 345,168 $ 219,601
Research and development 144,798 56,480
Operations 158,431 63,261
Sales and marketing 107,074 44,744
 Total $ 755,471 $ 384,086