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Stock compensation expense by functional category (Details) - USD ($)	3 Months Ended		6 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2024	Oct. 31, 2023
Share-Based Payment Arrangement [Abstract]
Research and development	$ 80,093	$ 147,629	$ 174,515	$ 275,046
Sales and marketing	130,264	208,903	246,807	374,212
General and administrative	1,093,680	839,793	2,328,753	1,458,673
Total	$ 1,304,037	$ 1,196,325	$ 2,750,075	$ 2,107,931