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Intangible assets (Details) - USD ($)	Apr. 30, 2024	Apr. 30, 2023
Intangible Assets Gross Carrying Amount [Member]
Proprietary technology	$ 4,282,001	$ 4,967,000
Non-compete agreements	65,000	81,000
Customer relationships		39,000
Total finite-lived assets	4,347,001	5,087,000
Brand name	1,430,000	3,152,000
Total indefinite-lived assets	1,430,000	3,152,000
Total intangible assets, net	5,777,001	8,239,000
Intangible Assets Accumulated Amortization [Member]
Proprietary technology	(1,917,612)	(1,271,112)
Non-compete agreements	(65,000)	(56,667)
Customer relationships		(18,106)
Total finite-lived assets	(1,982,612)	(1,345,885)
Brand name
Total indefinite-lived assets
Total intangible assets, net	(1,982,612)	(1,345,885)
Intangible Assets Net Carrying Value [Member]
Proprietary technology	2,364,389	3,695,888
Non-compete agreements		24,333
Customer relationships		20,894
Total finite-lived assets	2,364,389	3,741,115
Brand name	1,430,000	3,152,000
Total indefinite-lived assets	1,430,000	3,152,000
Total intangible assets, net	$ 3,794,389	$ 6,893,115