Stock-based compensation (Tables)

12 Months Ended

Jun. 30, 2019

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of valuation assumptions for stock options issued

	2019			2018
Expected volatility	232.16% - 234.30		%	133% - 234.30		%
Dividend yield		0	%		0	%
Risk-free interest rate	2.33% - 2.44		%	1.59% - 2.44		%
Expected life in years		3.5			3.5

Schedule of summary of stock option activity

				Weighted		Weighted
				Average		Average
				Exercise		Remaining
				Price		Contractual		Aggregate
				Per		Term		Intrinsic
	Options			Share		(Years)		Value
Outstanding at June 30, 2017		4,120,074			0.25		5.67		2,397,883
Granted		332,500			1.48
Exercised		(719,448	)		0.22
Forfeited		(591,250	)		0.38
Outstanding at June 30, 2018		3,141,876		$	0.21		5.23		6,168,665
Granted		750,000			0.40
Exercised		(449,500	)		0.44
Forfeited		(610,750	)		0.88
Outstanding at June 30, 2019		2,831,626			0.34		4.38		804,744
Vested options		2,732,876
Remaining options expected to vest		544,000

Schedule of non-qualified stock options

Expected volatility	134.81	%
Dividend yield	0	%
Risk-free interest rate	1.50	%
Expected life in years	3.5

Expected volatility	232.16% - 233.60
Dividend yield		0	%
Risk-free interest rate	2.37% - 2.67		%
Expected life in years		3.5

Expected volatility	232.16	%
Dividend yield	0	%
Risk-free interest rate	2.39	%
Expected life in years	3.5