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Assumptions used to calculate fair value of options granted (Details) - $ / shares
6 Months Ended
Oct. 31, 2025
Oct. 31, 2024
[custom:SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm2]   5 years 8 months 23 days
Options Assumptions Used [Member]    
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Exercise Price $ 0.95 $ 1.15
[custom:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice1-0] 1.12 2.45
[custom:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsStockPriceOnGrantDate-0] 0.95 1.20
[custom:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsStockPriceOnGrantDate1-0] $ 1.12 $ 2.56
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum 3.47% 3.54%
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Maximum 4.34% 4.44%
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 6 years 5 years 2 months 1 day
[custom:SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm2] 8 years 3 months  
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Minimum 242.38% 191.43%
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Maximum 260.22% 199.03%