Quarterly report pursuant to Section 13 or 15(d)

Note 11 - Share Based Awards (Tables)

v3.21.2
Note 11 - Share Based Awards (Tables)
3 Months Ended
Jul. 31, 2021
Share-based Payment Arrangement [Abstract]  
Schedule of Fair Value Assumption, Date of Securitization or Asset-backed Financing Arrangement, Transferor's Continuing Involvement, Servicing Assets or Liabilities [Table Text Block]
    July 31, 2021  
Exercise price     2.51 - 2.60    
Stock price on date of grant     2.51 - 2.60    
Volatility     210.68% - 214.17 %  
Risk-free interest rate     0.47% - 1.57 %  
Expected term (years)     3.75 - 10.00    
Dividend yield     -      
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]
Options   Shares   Weighted-Average Exercise Price   Weighted-Average Remaining Contractual Term   Aggregate Intrinsic Value
                                 
Outstanding as of April 30, 2020     1,597,475     $ 1.10                  
Granted     600,000       3.63                  
Exercised                                
Forfeited or expired                                
Outstanding as of April 30, 2021     2,197,475     1.79                  
Granted     449,000       2.57                  
Exercised                                
Forfeited or expired                                
Outstanding as of July 31, 2021     2,646,475     1.92       8.38     $ 3,648,567  
Exercisable as of July 31, 2021     1,305,810     $ 2.21       8.75     $ 1,626,037  
Schedule of Deferred Compensation Arrangement with Individual, Share-based Payments [Table Text Block]
    2021   2020
General and administrative   $ 219,601     $ 94,629  
Research and development     56,480       9,945  
Operations     63,261       2,487  
Sales and marketing     44,744       -    
 Total   $ 384,086     $ 107,061