Description of Business and Summary of Significant Accounting Policies	6 Months Ended
	Jun. 30, 2022
Accounting Policies [Abstract]
Description of Business and Summary of Significant Accounting Policies	Note 1. Description of Business and Summary of Significant Accounting Policies Description of Business Better Therapeutics, Inc. (“we”, “us”, “the Company”, or “Better”), a Delaware corporation, is a prescription digital therapeutics company developing nutritional cognitive behavioral therapy ("nCBT") to address the root causes of cardiometabolic diseases. We are developing a platform of FDA-regulated, software-based, prescription digital therapeutics ("PDTs") for treating diabetes, heart disease, and other cardiometabolic conditions that share lifestyle behaviors as common root causes. Our PDTs deliver a novel form of cognitive behavioral therapy that enables changes in neural pathways of the brain so that lasting changes in behavior become possible. Addressing the underlying causes of these diseases has the potential to dramatically improve patient health and lower healthcare costs. Our clinical development candidates are intended to treat cardiometabolic diseases, including type 2 diabetes ("T2D"), hypertension, hyperlipidemia, non-alcoholic fatty liver disease ("NAFLD"), non-alcoholic steatohepatitis ("NASH") and chronic kidney disease ("CKD"). Our lead product candidate for the treatment of patients with T2D, BT-001, completed a first-in-class randomized, controlled clinical trial of a prescription digital therapeutic for the treatment of in July 2022. The trial met both its primary and secondary endpoints showing statistically significant and clinically meaningful, durable decreases in blood sugar, when compared to a control group receiving standard of care. In addition, exploratory data revealed a host of cardiometabolic improvements as well as lower medication utilization compared to the control group. On October 28, 2021, Mountain Crest Acquisition Corp. II, a Delaware corporation ("MCAD") merged with and into former Better Therapeutics, Inc. ("Legacy BTX") with Legacy BTX surviving as a wholly-owned subsidiary of the acquiring company with the new name Better Therapeutics, Inc. MCAD consummated the acquisition of all the issued and outstanding shares of Legacy BTX. Accordingly, for accounting purposes, the financial statements of the combined entity represent a continuation of the financial statements of Better with the business combination being treated as the equivalent of Legacy BTX issuing stock for the net assets of MCAD, accompanied by a recapitalization. The net assets of MCAD are stated at fair value with no goodwill or other intangible assets recorded. Operations prior to the merger are those of Legacy BTX. As a result of the Business Combination, the shares and corresponding capital amounts and loss per share related to Legacy BTX's outstanding convertible preferred stock and common stock prior to the Business Combination have been retroactively restated to reflect the exchange ratio established in the Merger Agreement. For additional information on the Business Combination, refer to Note 2 of these financial statements. We are a remote, "fully distributed" company, and do not have offices. Basis of Presentation The financial statements and accompanying notes have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) and applicable rules and regulations of the Securities and Exchange Commission (“SEC”) regarding interim financial reporting. Certain information and disclosures normally included in the financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. In the opinion of management, all adjustments consisting of normal recurring accruals considered necessary for fair presentation have been included. Operating results for the three and six months ended June 30, 2022 are not necessarily indicative of the results that may be expected for the year ended December 31, 2022. Accordingly, these interim financial statements should be read in conjunction with the audited financial statements and accompanying notes for the years ended December 31, 2021 and 2020. Reclassification Certain prior year amounts have been reclassified for consistency with the current period presentation. An adjustment has been made to the Statement of Operations and Comprehensive Loss for the three and six months ended June 30, 2021 to reclassify $142 and $297 thousand of cost of sales into research and development expense to align with industry standards, respectively. This change in classification does not affect previously reported net loss in the Statement of Operations and Comprehensive Loss. Emerging Growth Company Status We are an emerging growth company, as defined in the Jumpstart Our Business Startups Act of 2012 (“JOBS Act”). Under the JOBS Act, emerging growth companies can delay adopting new or revised accounting standards issued after the enactment of the JOBS Act until such time as those standards apply to private companies. Thus, an emerging growth company can delay the adoption of certain accounting standards until those standards would otherwise apply to private companies. We have elected to avail ourselves of this extended transition period and, as a result, we do not adopt new or revised accounting standards on the relevant dates on which adoption of such standards is required for other public companies until required by private company accounting standards. Liquidity and Capital Resources The Company is in the development stage and our activities have consisted principally of raising capital and performing research and development. Since inception we have incurred significant losses from operations. As of June 30, 2022, we had cash of $29.7 million and an accumulated deficit of $91.3 million. We incurred a net loss of $19.6 million and used $15.6 million of cash in operating activities during the six months ended June 30, 2022. Our primary use of cash is to fund operating expenses, which consist of research and development expenses related to our lead product candidate, BT-001, preclinical programs and general and administrative expenses. Cash used to fund operating expenses is impacted by the timing of when we pay these expenses, as reflected in the change in our outstanding accounts payable and accrued expenses. We have incurred negative cash flows from operating activities and investing activities and significant losses from operations in the past. We expect to incur substantial expenses in the foreseeable future for the development and potential commercialization of our product candidates and ongoing internal research and development programs. At this time, we cannot reasonably estimate the nature, timing or aggregate amount of costs for our development, potential commercialization, and internal research and development programs. However, in order to complete our planned product development, and to complete the process of obtaining regulatory authorization or clearance for our product candidates, as well as to build the sales, marketing and distribution infrastructure that we believe will be necessary to commercialize our product candidates, if approved, we will require substantial additional funding in the future. In the event that additional financing is required from outside sources, we may not be able to raise it on terms acceptable to us, or at all. If we are unable to raise additional capital when desired, our business, results of operations, and financial condition would be adversely affected. Under our current operating plan, we believe we have sufficient capital to fund our operations into the first quarter of 2023. These factors raise substantial doubt regarding the Company's ability to continue as a going concern. Significant Risks and Uncertainties The Company is subject to those risks common in its industry and also those risks common to early-stage companies including, but not limited to, the possibility of not being able to successfully develop or market its products, technological obsolescence, competition, dependence on key personnel, the successful protection of its proprietary technologies, compliance with government regulations, and the possibility of not being able to obtain additional financing when needed. At this time, there remains uncertainty relating to the ongoing COVID-19 pandemic and the impact of related responses. Any impact of COVID-19 on our business, results of operations and financial condition will largely depend on future developments, which are highly uncertain and cannot be predicted with confidence, such as the geographic spread of the disease, the duration of the pandemic, travel restrictions and social distancing in the United States and other countries, business closures or business disruptions, the ultimate impact on financial markets and the global economy, and the effectiveness of actions taken in the United States and other countries to contain and treat the disease. Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make certain estimates, judgments, and assumptions that affect the reported amounts of assets and liabilities and the related disclosures at the date of the financial statements, as well as the reported amounts of revenue and expenses during the periods presented. The estimates and assumptions used in the accompanying financial statements are based upon management’s evaluation of the relevant facts and circumstances. Such estimates, judgments, and assumptions include estimated costs for capitalized internal-use software, fair values of stock-based awards, valuation allowance for deferred tax assets and fair value of SAFEs. Actual results could be different from these estimates. To the extent there are material differences between these estimates, judgments, or assumptions and actual results, our financial statements will be affected. Net Loss Per Share Attributable to Common Stockholders Basic and diluted net loss per share attributable to common stock is presented in conformity with the two-class method required for participating securities. Under the two-class method, the net loss attributable to common stock is not allocated to the preferred stock as the holders of our convertible preferred stock did not have a contractual obligation to share in our losses. Under the two-class method, net loss is attributed to common stock and participating securities based on their participation rights. Basic net loss per share attributable to common stock is computed by dividing the net loss attributable to common stock by the weighted-average number of shares of common stock outstanding during the period. Cumulative dividends attributable to participating securities are subtracted from net loss in determining net loss attributable to common stockholders. As we have reported net losses for all periods presented, all potentially dilutive securities are anti-dilutive and, accordingly, basic net loss per share equals diluted net loss per share. Recent Accounting Pronouncements In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842), which modifies lease accounting for lessees to increase transparency and comparability by recording lease assets and liabilities for operating leases and disclosing key information about leasing arrangements. In July 2018, the FASB issued ASU No. 2018-10, Codification Improvements to Topic 842, Leases, and ASU No. 2018-11, Leases (Topic 842), Targeted Improvements, which affect certain aspects of the previously issued guidance. In December 2018, the FASB issued ASU No. 2018-20, Narrow-Scope Improvements for Lessor, Leases (Topic 842), which provides guidance on sales tax and other taxes collected from lessees. In December 2019, the FASB issued ASU No. 2019-01, Codification Improvements to Topic 842, Leases, which affect certain aspects of the previously issued guidance. Amendments include an additional transition method that allows entities to apply the new standard on the adoption date and recognize a cumulative effect adjustment to the opening balance of retained earnings, as well as a new practical expedient for lessors. We adopted ASC 842 on January 1, 2022. The adoption of this guidance did not have any impact on our financial statements.