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v3.22.2.2

Stock compensation expense (Details) - USD ($) | 12 Months Ended
--- | ---
Apr. 30, 2022 | Apr. 30, 2021
Share-Based Payment Arrangement [Abstract] |  |
General and administrative | $ 1,521,951 | $ 1,688,025
Research and development | 516,456 | 1,269,987
Operations | 783,781 | 220,048
Sales and marketing | 469,447 | 210,156
Total | $ 3,291,635 | $ 3,388,216

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