<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2024-02-26</periodOfReport>

    <notSubjectToSection16>true</notSubjectToSection16>

    <issuer>
        <issuerCik>0001826018</issuerCik>
        <issuerName>ROVER GROUP, INC.</issuerName>
        <issuerTradingSymbol>ROVR</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001389534</rptOwnerCik>
            <rptOwnerName>Gottesman Greg</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O ROVER GROUP, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>720 OLIVE WAY, 19TH FLOOR</rptOwnerStreet2>
            <rptOwnerCity>SEATTLE</rptOwnerCity>
            <rptOwnerState>WA</rptOwnerState>
            <rptOwnerZipCode>98101</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>false</isDirector>
            <isOfficer>false</isOfficer>
            <isTenPercentOwner>false</isTenPercentOwner>
            <isOther>true</isOther>
            <officerTitle></officerTitle>
            <otherText>Former Director</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>false</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Class A Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2024-02-26</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>false</equitySwapInvolved>
                <footnoteId id="F1"/>
                <footnoteId id="F2"/>
                <footnoteId id="F3"/>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>878.00</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>102042.00</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Class A Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2024-02-27</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>false</equitySwapInvolved>
                <footnoteId id="F4"/>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>41417.00</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F4"/>
                    <footnoteId id="F5"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>143459.00</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Class A Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2024-02-27</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>D</transactionCode>
                <equitySwapInvolved>false</equitySwapInvolved>
                <footnoteId id="F6"/>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>143459.00</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>11.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0.00</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Restricted Stock Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F5"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2024-02-27</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>false</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>41417.00</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F4"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F4"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Class A Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>41417.00</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0.00</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">On February 26, 2024 and immediately prior to the closing of the Merger (as defined below), the reporting person became entitled to receive these shares of Rover Group, Inc. Class A common stock, par value $0.0001 per share (&quot;Class A Common Stock&quot;), pursuant to an &quot;earn-out&quot; provision of the Business Combination Agreement, dated as of February 10, 2021 (the &quot;Business Combination Agreement&quot;), by and among Nebula Caravel Acquisition Corp. (n/k/a Rover Group, Inc.) (&quot;Caravel&quot;), Fetch Merger Sub, Inc., a Delaware corporation and a direct wholly owned subsidiary of Caravel (&quot;Fetch Merger Sub&quot;), and A Place for Rover, Inc., a Delaware corporation (&quot;Legacy Rover&quot;). The merger between Fetch Merger Sub and Legacy Rover is referred to as the &quot;de-SPAC Merger.&quot;</footnote>
        <footnote id="F2">Section 3.7 of the Business Combination Agreement provided that Legacy Rover stockholders would receive additional shares of Class A Common Stock, for no additional consideration, if the volume weighted average price of Class A Common Stock over 20 trading days within any 30 trading day period during the Earnout Period (as defined in the Business Combination Agreement) was greater than or equal to $16.00. However, upon the occurrence of a &quot;Change of Control&quot; (as defined in the Business Combination Agreement) of Rover Group, Inc., all remaining earnout milestones set forth in the Business Combination Agreement would be deemed to have occurred. The Merger constitutes a Change of Control for purposes of the Business Combination Agreement and, as a result, Legacy Rover's former stockholders, including the reporting person, acquired additional shares of Class A Common Stock pursuant to the Business Combination Agreement immediately prior to the closing of the Merger.</footnote>
        <footnote id="F3">The number of shares issuable pursuant to the earn-out right was determined on February 26, 2024 pursuant to a formula set forth in the Business Combination Agreement. Legacy Rover stockholders received Class A Common Stock at a ratio of 0.0183 shares of Class A Common Stock for each share of Legacy Rover stock held immediately prior to the de-SPAC Merger. The reporting person's right to receive additional shares pursuant to the earn-out right became fixed and irrevocable on July 30, 2021, the effective date of the de-SPAC Merger.</footnote>
        <footnote id="F4">Pursuant to the terms of the Rover Group, Inc. 2021 Equity Incentive Plan and Rover Group, Inc. Outside Director Compensation Policy, in the event of a &quot;Change in Control&quot; (as defined in the plan and includes the closing of the Merger (as defined below)), all outstanding restricted stock units (&quot;RSUs&quot;) held by the reporting person vested immediately prior to the closing of the Merger and the reporting person is entitled to receive the $11.00 per share Merger consideration for such vested RSUs.</footnote>
        <footnote id="F5">RSUs convert into Class A Common Stock on a one-for-one basis.</footnote>
        <footnote id="F6">Pursuant to that certain Agreement and Plan of Merger, dated as of November 29, 2023, by and among Rover Group, Inc., Biscuit Parent, LLC (&quot;Parent&quot;), and Biscuit Merger Sub, LLC (&quot;Merger Sub&quot;), Merger Sub merged with and into Rover Group, Inc. (the &quot;Merger&quot;), with Rover Group, Inc. surviving the Merger as a wholly owned subsidiary of Parent. At the effective time of the Merger (the &quot;Effective Time&quot;), each share of Class A Common Stock that was issued and outstanding immediately prior to the Effective Time was automatically cancelled and converted into the right to receive $11.00 per share in cash, without interest and subject to any applicable tax withholdings.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Melissa Weiland, attorney in fact on behalf of Gottesman Greg</signatureName>
        <signatureDate>2024-02-28</signatureDate>
    </ownerSignature>
</ownershipDocument>
