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Condensed Statements of Operations (Unaudited) - USD ($)
 3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Income Statement [Abstract]    
Revenues $ 4,812,979 $ 4,220,686
Cost of revenues 2,238,936 1,996,971
Gross profit 2,574,043 2,223,715
Operating expenses:    
Research and development 931,034 880,638
Sales and marketing 660,462 767,796
General and administrative 740,537 666,116
Total operating expenses 2,332,033 2,314,550
Operating income (loss) 242,010 (90,835)
Interest expense, net (48,701) (19,492)
Other income 10,082 20,000
Net income (loss) before income taxes 203,391 (90,327)
Income tax expense 489
Net income (loss) $ 202,902 $ (90,327)
Net income (loss) per share:    
Basic $ 0.03 $ (0.01)
Diluted $ 0.03 $ (0.01)
Weighted average shares outstanding:    
Basic 6,484,391 6,014,007
Diluted 7,305,988 6,014,007