Note 2 - Accrued Expenses - Schedule of Accrued Expenses (Details) - USD ($)	Sep. 30, 2021	Dec. 31, 2020
Payroll and related costs	$ 9,410	$ 25,319
Royalties	47,803	47,803
Accrued cost of revenues	315,157	170,928
Sales tax	31,902	31,902
Other	410	302
Total	$ 404,682	$ 276,254