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Stock compensation expense by functional category (Details) - USD ($) | 3 Months Ended
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Jul. 31, 2023 | Jul. 31, 2022
Share-Based Payment Arrangement [Abstract] |  |
General and administrative | $ 427,781 | $ 345,168
Research and development | 127,417 | 144,798
Operations | 191,099 | 158,431
Sales and marketing | 165,309 | 107,074
Total | $ 911,606 | $ 755,471

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Balance Type: | debit
Period Type: | duration

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Data Type: | xbrli:monetaryItemType
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Period Type: | duration

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