Stock compensation expense by functional category (Details) - USD ($) |
3 Months Ended | 9 Months Ended | ||
---|---|---|---|---|
Jan. 31, 2023 |
Jan. 31, 2022 |
Jan. 31, 2023 |
Jan. 31, 2022 |
|
Share-Based Payment Arrangement [Abstract] | ||||
Operations | $ 181,908 | $ 182,320 | $ 566,218 | $ 556,928 |
Research and development | 170,579 | 143,279 | 524,874 | 284,511 |
Sales and marketing | 120,733 | 112,975 | 390,076 | 271,808 |
General and administrative | 315,471 | 343,549 | 1,309,790 | 952,899 |
Total | $ 788,691 | $ 782,123 | $ 2,790,958 | $ 2,066,146 |
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