<SUBMISSION>
<ACCESSION-NUMBER>0001491778-17-000122
<TYPE>4
<PUBLIC-DOCUMENT-COUNT>1
<PERIOD>20170528
<FILING-DATE>20170531
<DATE-OF-FILING-DATE-CHANGE>20170531
<ISSUER>
<COMPANY-DATA>
<CONFORMED-NAME>Angie's List, Inc.
<CIK>0001491778
<ASSIGNED-SIC>7310
<IRS-NUMBER>272440197
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<BUSINESS-ADDRESS>
<STREET1>1030 EAST WASHINGTON STREET
<STREET2>SUITE 100
<CITY>INDIANAPOLIS
<STATE>IN
<ZIP>46202
<PHONE>317-803-3973
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>1030 EAST WASHINGTON STREET
<STREET2>SUITE 100
<CITY>INDIANAPOLIS
<STATE>IN
<ZIP>46202
</MAIL-ADDRESS>
</ISSUER>
<REPORTING-OWNER>
<OWNER-DATA>
<CONFORMED-NAME>SEMLER ERIC
<CIK>0001162095
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>4
<ACT>34
<FILE-NUMBER>001-35339
<FILM-NUMBER>17881308
</FILING-VALUES>
<MAIL-ADDRESS>
<STREET1>2330 NW EVERETT ST.
<CITY>PORTLAND
<STATE>OR
<ZIP>97210
</MAIL-ADDRESS>
</REPORTING-OWNER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wf-form4_149626205194290.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2017-05-28</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001491778</issuerCik>
        <issuerName>Angie's List, Inc.</issuerName>
        <issuerTradingSymbol>ANGI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001162095</rptOwnerCik>
            <rptOwnerName>SEMLER ERIC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>TCS CAPITAL MANAGEMENT, LLC</rptOwnerStreet1>
            <rptOwnerStreet2>888 SEVENTH AVENUE, SUITE 1504</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10106</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2017-05-28</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>6332</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>13645</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>5434102</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnote 2</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>481178</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnote 3</value>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>646248</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnote 4</value>
                    <footnoteId id="F4"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Restricted Stock Units (RSU)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F5"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2017-05-28</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>6332</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F6"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F7"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>6332.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>18996</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Reflects the number of shares of the Issuer's common stock that were acquired upon settlement of the corresponding RSUs listed in Table II.</footnote>
        <footnote id="F2">Shares of the Issuer's common stock held directly by TCS Global Equity Master Fund, LP (&quot;TCS Master&quot;). TCS Capital Management, LLC (&quot;TCS Capital&quot;) may be deemed to indirectly beneficially own the shares of common stock of the Issuer held directly by TCS Master because TCS Capital serves as the investment manager of TCS Master and has voting and investment power over such securities. Mr. Semler may be deemed to indirectly beneficially own the shares of common stock held directly by TCS Master because of his relationship with TCS Capital. Mr. Semler is the Managing Member of TCS Capital and may be deemed to direct all voting and investment decisions made by TCS Capital. Mr. Semler disclaims beneficial ownership of the shares of common stock held by TCS Master except to the extent of his pecuniary interest therein.</footnote>
        <footnote id="F3">Shares of the Issuer's common stock held directly by a certain managed account (the &quot;Managed Account&quot;). TCS Capital may be deemed to indirectly beneficially own the shares of common stock of the Issuer held directly by the Managed Account because TCS Capital serves as the investment manager of the Managed Account and has voting and investment power over such securities. Mr. Semler may be deemed to indirectly beneficially own the shares of common stock held directly by the Managed Account because of his relationship with TCS Capital. Mr. Semler is the Managing Member of TCS Capital and may be deemed to direct all voting and investment decisions made by TCS Capital. Mr. Semler disclaims beneficial ownership of the shares of common stock held by the Managed Account except to the extent of his pecuniary interest therein.</footnote>
        <footnote id="F4">Shares of the Issuer's common stock held directly by an irrevocable family trust. Mr. Semler's spouse is the trustee of the trust. Mr. Semler disclaims beneficial ownership of the shares of common stock of the Issuer held directly by the irrevocable family trust, and the filing of this report is not an admission that Mr. Semler is the beneficial owner of such securities for purposes of Section 16 or any other purpose.</footnote>
        <footnote id="F5">Each RSU represents a contingent right to receive one share of the Issuer's common stock upon settlement, and there is no exercise price associated with the RSUs.</footnote>
        <footnote id="F6">On February 28, 2017, Mr. Semler was granted 25,328 RSUs, vesting in four equal quarterly installments over a one-year period from the date of grant.</footnote>
        <footnote id="F7">There is no expiration date with respect to the RSUs granted. Units will either vest or be forfeited.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Shannon M. Shaw, as Attorney-in-fact</signatureName>
        <signatureDate>2017-05-31</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SUBMISSION>
