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Assumptions used to calculate fair value of options granted (Details) - $ / shares
12 Months Ended
Apr. 30, 2024
Apr. 30, 2023
[custom:SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm2] 8 years 3 months  
Options Assumptions Used [Member]    
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Exercise Price $ 0.72 $ 0.89
[custom:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice1-0] 1.12 2.38
[custom:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsStockPriceOnGrantDate-0] 0.70 0.89
[custom:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsStockPriceOnGrantDate1-0] $ 1.12 $ 2.38
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum 3.46% 3.34%
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Maximum 4.41% 4.18%
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term 5 years 3 months 10 days 6 years 3 months
[custom:SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm2]   8 years 3 months
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Minimum 206.99% 245.57%
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Maximum 262.07% 260.06%