Consolidated Balance Sheets - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Current assets
Cash and cash equivalents	$ 4,375,300	$ 1,541,900
Accounts receivable, net	417,300	271,200
Prepaid expenses and other current assets	48,500	59,000
Total current assets	4,841,100	1,872,100
Property and equipment, net
Other assets	17,800	17,800
Total assets	4,858,900	1,889,900
Current liabilities
Accounts payable	251,000	271,900
Accrued expenses	82,000	106,000
Accrued wages	141,600	136,400
Deferred revenue	1,084,900	1,256,000
Total current liabilities	1,559,500	1,770,300
Long-term liabilites
Deferred revenue	383,000	529,500
Total liabilities	1,942,500	2,299,800
Commitments and contingencies
Stockholders' equity (deficit)
Preferred stock, $0.01 par value, 5,000,000 shares authorized, no shares issued and outstanding as of December 31, 2020 or 2019
Common stock, $0.0001 par value, 195,000,000 shares authorized, 18,850,675 and 9,834,866 shares issued and outstanding as of December 31, 2020 and 2019, respectively	1,900	1,000
Additional paid-in capital	82,155,200	79,523,500
Accumulated deficit	(79,240,700)	(79,934,400)
Total stockholders' equity (deficit)	2,916,400	(409,900)
Total liabilities and stockholders' equity (deficit)	$ 4,858,900	$ 1,889,900