Description of Business	6 Months Ended
Jun. 30, 2026
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business	1. Description of Business Liftoff Mobile, Inc. (collectively referred to with its wholly owned subsidiaries as the “Company” or “Liftoff”) was incorporated in the state of Delaware and is headquartered in Redwood City, California, with offices in the U.S. as well as internationally in Europe and Asia. Liftoff is an independent mobile growth enablement platform, offering solutions that cover the entire app growth cycle. Initial Public Offering The Company’s registration statement on Form S-1 (the “IPO Registration Statement”) related to its initial public offering (“IPO”) was declared effective on June 3, 2026, and the Company’s common stock began trading on the Nasdaq Global Select Market on June 4, 2026. On June 5, 2026, the Company completed its IPO, in which it issued and sold 21.9 million shares of common stock, including 2.9 million shares of common stock pursuant to the underwriters’ exercise in full of their over-allotment option, at a public offering price of $23.00 per share. The Company received net proceeds of approximately $472.4 million after deducting underwriting discounts and commissions and before offering expenses. The Company used the proceeds to repay outstanding indebtedness totaling $409.2 million in aggregate principal amount, and intends to use the remainder for general corporate purposes and to cover all of the expenses of the IPO. Refer to Note 4. Credit Agreements for additional details on the debt repayment. Upon the effectiveness of the IPO registration statement, certain stock-based awards with performance-based vesting conditions tied to the IPO became probable of vesting, resulting in the recognition of stock-based compensation expense during the period in which the IPO occurred. Refer to Note 8. Stock-based Compensation for additional details. Reclassification and Stock Split On June 3, 2026, following the effectiveness of the IPO Registration Statement, the Company amended its certificate of incorporation to (i) reclassify all outstanding shares of Class A and Class B common stock into a single class of common stock (the “Reclassification”) and (ii) effect a 1.3-for-1 forward stock split of such single class of common stock (the “Stock Split”). As a result of the Stock Split, every share of issued and outstanding common stock was converted into 1.3 issued and outstanding shares of common stock, without any change in par value per share. Accordingly, an amount equal to the par value of the increased common shares resulting from the Stock Split was reclassified from capital in excess of par value to common stock. The Reclassification and Stock Split affected all shares of common stock outstanding immediately prior to the effectiveness of the Reclassification and Stock Split, as well as the number of shares of common stock authorized and available for issuance under the equity incentive plan which was in place prior to the IPO. In addition, the Stock Split resulted in an increase in the number of stock options, stock appreciation rights, and restricted stock units that were outstanding immediately prior to the effectiveness of the Stock Split, with a corresponding adjustment to the exercise price where applicable. No fractional shares were issued because of the Stock Split. Holders who would otherwise be entitled to receive a fractional share or equity award will receive a cash payment in lieu thereof. All common share and per common share amounts, including dividend per share amounts, in these condensed consolidated financial statements and notes thereto have been retroactively adjusted for all periods presented to give effect to the Reclassification and Stock Split. The Reclassification and Stock Split did not change (i) the total number of preferred shares authorized, issued, and outstanding, or (ii) the aggregate liquidation preference of the Preferred Stock (defined in Note 2. Summary of Significant Accounting Policies). The conversion rate and the conversion price used to determine the number of shares of common stock issuable upon the conversion of Preferred Stock have been retroactively adjusted to reflect the Stock Split.

Liftoff Mobile, Inc. (collectively referred to with its wholly owned subsidiaries as the “Company” or “Liftoff”) was incorporated in the state of Delaware and is headquartered in Redwood City, California, with offices in the U.S. as well as internationally in Europe and Asia. Liftoff is an independent mobile growth enablement platform, offering solutions that cover the entire app growth cycle.

The Company’s registration statement on Form S-1 (the “IPO Registration Statement”) related to its initial public offering (“IPO”) was declared effective on June 3, 2026, and the Company’s common stock began trading on the Nasdaq Global Select Market on June 4, 2026. On June 5, 2026, the Company completed its IPO, in which it issued and sold 21.9 million shares of common stock, including 2.9 million shares of common stock pursuant to the underwriters’ exercise in full of their over-allotment option, at a public offering price of $23.00 per share. The Company received net proceeds of approximately $472.4 million after deducting underwriting discounts and commissions and before offering expenses. The Company used the proceeds to repay outstanding indebtedness totaling $409.2 million in aggregate principal amount, and intends to use the remainder for general corporate purposes and to cover all of the expenses of the IPO. Refer to Note 4. Credit Agreements for additional details on the debt repayment.

On June 3, 2026, following the effectiveness of the IPO Registration Statement, the Company amended its certificate of incorporation to (i) reclassify all outstanding shares of Class A and Class B common stock into a single class of common stock (the “Reclassification”) and (ii) effect a 1.3-for-1 forward stock split of such single class of common stock (the “Stock Split”). As a result of the Stock Split, every share of issued and outstanding common stock was converted into 1.3 issued and outstanding shares of common stock, without any change in par value per share. Accordingly, an amount equal to the par value of the increased common shares resulting from the Stock Split was reclassified from capital in excess of par value to common stock. The Reclassification and Stock Split affected all shares of common stock outstanding immediately prior to the effectiveness of the Reclassification and Stock Split, as well as the number of shares of common stock authorized and available for issuance under the equity incentive plan which was in place prior to the IPO. In addition, the Stock Split resulted in an increase in the number of stock options, stock appreciation rights, and restricted stock units that were outstanding immediately prior to the effectiveness of the Stock Split, with a corresponding adjustment to the exercise price where applicable. No fractional shares were issued because of the Stock Split. Holders who would otherwise be entitled to receive a fractional share or equity award will receive a cash payment in lieu thereof. All common share and per common share amounts, including dividend per share amounts, in these condensed consolidated financial statements and notes thereto have been retroactively adjusted for all periods presented to give effect to the Reclassification and Stock Split.

The Reclassification and Stock Split did not change (i) the total number of preferred shares authorized, issued, and outstanding, or (ii) the aggregate liquidation preference of the Preferred Stock (defined in Note 2. Summary of Significant Accounting Policies). The conversion rate and the conversion price used to determine the number of shares of common stock issuable upon the conversion of Preferred Stock have been retroactively adjusted to reflect the Stock Split.