Schedule of Employee and Non-Employee Service Share-based Compensation Allocation of Recognized Period Costs (Details) - USD ($)	3 Months Ended
Jul. 31, 2019	Jul. 31, 2018
Allocated Share-based Compensation Expense	$ 48,015	$ 78,730
Cost of sales [Member]
Allocated Share-based Compensation Expense	11,220	14,569
Sales and marketing [Member]
Allocated Share-based Compensation Expense	15,724	22,482
Research and development [Member]
Allocated Share-based Compensation Expense	10,303	15,031
General and administrative [Member]
Allocated Share-based Compensation Expense	$ 10,768	$ 26,648

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5047-113901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.F)
-URI http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration