CONDENSED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Operating expenses:
Research and development	$ 2,240	$ 4,241	$ 5,629	$ 7,914
Sales and marketing	1,704	1,683	3,808	3,727
General and administrative	3,081	3,675	6,513	7,303
Total operating expenses	7,025	9,599	15,950	18,944
Loss from operations	(7,025)	(9,599)	(15,950)	(18,944)
Interest expense, net	(563)	(329)	(994)	(646)
Loss before provision for income taxes	(7,588)	(9,928)	(16,944)	(19,590)
Provision for income taxes	1		2
Net loss	$ (7,589)	$ (9,928)	$ (16,946)	$ (19,590)
Net loss per share, basic	$ (0.24)	$ (0.42)	$ (0.62)	$ (0.83)
Net loss per share, diluted	$ (0.24)	$ (0.42)	$ (0.62)	$ (0.83)
Weighted-average shares used in computing net loss per share, basic	31,215,194	23,592,995	27,541,308	23,498,978
Weighted-average shares used in computing net loss per share, diluted	31,215,194	23,592,995	27,541,308	23,498,978