<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:ns2="http://www.sec.gov/edgar/common">
    <headerData>
        <submissionType>144</submissionType>
        <filerInfo>
            <filer>
                <filerCredentials>
                    <cik>0000938333</cik>
                    <ccc>XXXXXXXX</ccc>
                </filerCredentials>
            </filer>
            <liveTestFlag>LIVE</liveTestFlag>



        </filerInfo>
    </headerData>
    <formData>
        <issuerInfo>
            <issuerCik>0001433195</issuerCik>
            <issuerName>APPFOLIO INC</issuerName>
            <secFileNumber>001-37468</secFileNumber>
            <issuerAddress>
                <ns2:street1>70 Castilian Drive</ns2:street1>
                <ns2:city>Santa Barbara</ns2:city>
                <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                <ns2:zipCode>93117</ns2:zipCode>
            </issuerAddress>
            <issuerContactPhone>8053646093</issuerContactPhone>
            <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>MAURICE J DUCA</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
            <relationshipsToIssuer>
                <relationshipToIssuer>10% Stockholder</relationshipToIssuer>
            </relationshipsToIssuer>
        </issuerInfo>
        <securitiesInformation>
            <securitiesClassTitle>COMMON</securitiesClassTitle>
            <brokerOrMarketmakerDetails>
                <name>Morgan Stanley Smith Barney LLC Executive Financial Services</name>
                <address>
                    <ns2:street1>1 New York Plaza</ns2:street1>
                    <ns2:street2>8th Floor</ns2:street2>
                    <ns2:city>New York</ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>10004</ns2:zipCode>
                </address>
            </brokerOrMarketmakerDetails>
            <noOfUnitsSold>50000</noOfUnitsSold>
            <aggregateMarketValue>13488500.00</aggregateMarketValue>
            <noOfUnitsOutstanding>22326649</noOfUnitsOutstanding>
            <approxSaleDate>07/23/2024</approxSaleDate>
            <securitiesExchangeName>NASDAQ</securitiesExchangeName>
        </securitiesInformation>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>06/26/2015</acquiredDate>
            <natureOfAcquisitionTransaction>IPO</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>50000</amountOfSecuritiesAcquired>
            <paymentDate>06/26/2015</paymentDate>
            <natureOfPayment>N/A</natureOfPayment>
        </securitiesToBeSold>
        <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales for MAURICE J. DUCA FAMILY TRUST U/ADTD 03/25/1981</name>
                <address>
                    <ns2:street1>70 Castilian Drive</ns2:street1>
                    <ns2:city>Santa Barbara</ns2:city>
                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>93117</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>COMMON</securitiesClassTitle>
            <saleDate>07/08/2024</saleDate>
            <amountOfSecuritiesSold>876</amountOfSecuritiesSold>
            <grossProceeds>221470.41</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales for MAURICE J. DUCA FAMILY TRUST U/ADTD 03/25/1981</name>
                <address>
                    <ns2:street1>70 Castilian Drive</ns2:street1>
                    <ns2:city>Santa Barbara</ns2:city>
                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>93117</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>COMMON</securitiesClassTitle>
            <saleDate>07/05/2024</saleDate>
            <amountOfSecuritiesSold>2084</amountOfSecuritiesSold>
            <grossProceeds>523201.33</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales for MAURICE J. DUCA FAMILY TRUST U/ADTD 03/25/1981</name>
                <address>
                    <ns2:street1>70 Castilian Drive</ns2:street1>
                    <ns2:city>Santa Barbara</ns2:city>
                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>93117</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>COMMON</securitiesClassTitle>
            <saleDate>07/03/2024</saleDate>
            <amountOfSecuritiesSold>2931</amountOfSecuritiesSold>
            <grossProceeds>730704.75</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales for MAURICE J. DUCA FAMILY TRUST U/ADTD 03/25/1981</name>
                <address>
                    <ns2:street1>70 Castilian Drive</ns2:street1>
                    <ns2:city>Santa Barbara</ns2:city>
                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>93117</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>COMMON</securitiesClassTitle>
            <saleDate>07/02/2024</saleDate>
            <amountOfSecuritiesSold>4500</amountOfSecuritiesSold>
            <grossProceeds>1107604.35</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales for MAURICE J. DUCA FAMILY TRUST U/ADTD 03/25/1981</name>
                <address>
                    <ns2:street1>70 Castilian Drive</ns2:street1>
                    <ns2:city>Santa Barbara</ns2:city>
                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>93117</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>COMMON</securitiesClassTitle>
            <saleDate>07/01/2024</saleDate>
            <amountOfSecuritiesSold>3000</amountOfSecuritiesSold>
            <grossProceeds>729457.50</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales for MAURICE J. DUCA FAMILY TRUST U/ADTD 03/25/1981</name>
                <address>
                    <ns2:street1>70 Castilian Drive</ns2:street1>
                    <ns2:city>Santa Barbara</ns2:city>
                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>93117</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>COMMON</securitiesClassTitle>
            <saleDate>06/28/2024</saleDate>
            <amountOfSecuritiesSold>5200</amountOfSecuritiesSold>
            <grossProceeds>1273637.04</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales for MAURICE J. DUCA FAMILY TRUST U/ADTD 03/25/1981</name>
                <address>
                    <ns2:street1>70 Castilian Drive</ns2:street1>
                    <ns2:city>Santa Barbara</ns2:city>
                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>93117</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>COMMON</securitiesClassTitle>
            <saleDate>06/27/2024</saleDate>
            <amountOfSecuritiesSold>5952</amountOfSecuritiesSold>
            <grossProceeds>1470358.87</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales for MAURICE J. DUCA FAMILY TRUST U/ADTD 03/25/1981</name>
                <address>
                    <ns2:street1>70 Castilian Drive</ns2:street1>
                    <ns2:city>Santa Barbara</ns2:city>
                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>93117</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>COMMON</securitiesClassTitle>
            <saleDate>06/26/2024</saleDate>
            <amountOfSecuritiesSold>3205</amountOfSecuritiesSold>
            <grossProceeds>766698.82</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales for MAURICE J. DUCA FAMILY TRUST U/ADTD 03/25/1981</name>
                <address>
                    <ns2:street1>70 Castilian Drive</ns2:street1>
                    <ns2:city>Santa Barbara</ns2:city>
                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>93117</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>COMMON</securitiesClassTitle>
            <saleDate>06/25/2024</saleDate>
            <amountOfSecuritiesSold>3056</amountOfSecuritiesSold>
            <grossProceeds>720618.86</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales for MAURICE J. DUCA FAMILY TRUST U/ADTD 03/25/1981</name>
                <address>
                    <ns2:street1>70 Castilian Drive</ns2:street1>
                    <ns2:city>Santa Barbara</ns2:city>
                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>93117</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>COMMON</securitiesClassTitle>
            <saleDate>06/24/2024</saleDate>
            <amountOfSecuritiesSold>2741</amountOfSecuritiesSold>
            <grossProceeds>633018.05</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales for MAURICE J. DUCA FAMILY TRUST U/ADTD 03/25/1981</name>
                <address>
                    <ns2:street1>70 Castilian Drive</ns2:street1>
                    <ns2:city>Santa Barbara</ns2:city>
                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>93117</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>COMMON</securitiesClassTitle>
            <saleDate>06/21/2024</saleDate>
            <amountOfSecuritiesSold>4802</amountOfSecuritiesSold>
            <grossProceeds>1118235.02</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales for MAURICE J. DUCA FAMILY TRUST U/ADTD 03/25/1981</name>
                <address>
                    <ns2:street1>70 Castilian Drive</ns2:street1>
                    <ns2:city>Santa Barbara</ns2:city>
                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>93117</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>COMMON</securitiesClassTitle>
            <saleDate>06/20/2024</saleDate>
            <amountOfSecuritiesSold>4203</amountOfSecuritiesSold>
            <grossProceeds>968132.05</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales for MAURICE J. DUCA FAMILY TRUST U/ADTD 03/25/1981</name>
                <address>
                    <ns2:street1>70 Castilian Drive</ns2:street1>
                    <ns2:city>Santa Barbara</ns2:city>
                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>93117</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>COMMON</securitiesClassTitle>
            <saleDate>06/18/2024</saleDate>
            <amountOfSecuritiesSold>2750</amountOfSecuritiesSold>
            <grossProceeds>637905.95</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales for MAURICE J. DUCA FAMILY TRUST U/ADTD 03/25/1981</name>
                <address>
                    <ns2:street1>70 Castilian Drive</ns2:street1>
                    <ns2:city>Santa Barbara</ns2:city>
                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>93117</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>COMMON</securitiesClassTitle>
            <saleDate>06/17/2024</saleDate>
            <amountOfSecuritiesSold>2600</amountOfSecuritiesSold>
            <grossProceeds>597097.80</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales for MAURICE J. DUCA FAMILY TRUST U/ADTD 03/25/1981</name>
                <address>
                    <ns2:street1>70 Castilian Drive</ns2:street1>
                    <ns2:city>Santa Barbara</ns2:city>
                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>93117</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>COMMON</securitiesClassTitle>
            <saleDate>06/14/2024</saleDate>
            <amountOfSecuritiesSold>2100</amountOfSecuritiesSold>
            <grossProceeds>485527.77</grossProceeds>
        </securitiesSoldInPast3Months>
        <noticeSignature>
            <noticeDate>07/23/2024</noticeDate>
            <planAdoptionDates>
                <planAdoptionDate>03/15/2024</planAdoptionDate>
            </planAdoptionDates>
            <signature>/s/ Maurice Joseph Duca</signature>
        </noticeSignature>
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[{"type": "144", "sequence": "1", "filename": "primary_doc.xml", "secsgml_size_bytes": 14469}]
144
0000938333
XXXXXXXX
LIVE
0001433195
APPFOLIO INC
001-37468
70 Castilian Drive
Santa Barbara
CA
93117
8053646093
MAURICE J DUCA
10% Stockholder
COMMON
Morgan Stanley Smith Barney LLC Executive Financial Services
1 New York Plaza
8th Floor
New York
NY
10004
50000
13488500.00
22326649
07/23/2024
NASDAQ
Common
06/26/2015
IPO
Issuer
N
50000
06/26/2015
N/A
N
10b5-1 Sales for MAURICE J. DUCA FAMILY TRUST U/ADTD 03/25/1981
70 Castilian Drive
Santa Barbara
CA
93117
COMMON
07/08/2024
876
221470.41
10b5-1 Sales for MAURICE J. DUCA FAMILY TRUST U/ADTD 03/25/1981
70 Castilian Drive
Santa Barbara
CA
93117
COMMON
07/05/2024
2084
523201.33
10b5-1 Sales for MAURICE J. DUCA FAMILY TRUST U/ADTD 03/25/1981
70 Castilian Drive
Santa Barbara
CA
93117
COMMON
07/03/2024
2931
730704.75
10b5-1 Sales for MAURICE J. DUCA FAMILY TRUST U/ADTD 03/25/1981
70 Castilian Drive
Santa Barbara
CA
93117
COMMON
07/02/2024
4500
1107604.35
10b5-1 Sales for MAURICE J. DUCA FAMILY TRUST U/ADTD 03/25/1981
70 Castilian Drive
Santa Barbara
CA
93117
COMMON
07/01/2024
3000
729457.50
10b5-1 Sales for MAURICE J. DUCA FAMILY TRUST U/ADTD 03/25/1981
70 Castilian Drive
Santa Barbara
CA
93117
COMMON
06/28/2024
5200
1273637.04
10b5-1 Sales for MAURICE J. DUCA FAMILY TRUST U/ADTD 03/25/1981
70 Castilian Drive
Santa Barbara
CA
93117
COMMON
06/27/2024
5952
1470358.87
10b5-1 Sales for MAURICE J. DUCA FAMILY TRUST U/ADTD 03/25/1981
70 Castilian Drive
Santa Barbara
CA
93117
COMMON
06/26/2024
3205
766698.82
10b5-1 Sales for MAURICE J. DUCA FAMILY TRUST U/ADTD 03/25/1981
70 Castilian Drive
Santa Barbara
CA
93117
COMMON
06/25/2024
3056
720618.86
10b5-1 Sales for MAURICE J. DUCA FAMILY TRUST U/ADTD 03/25/1981
70 Castilian Drive
Santa Barbara
CA
93117
COMMON
06/24/2024
2741
633018.05
10b5-1 Sales for MAURICE J. DUCA FAMILY TRUST U/ADTD 03/25/1981
70 Castilian Drive
Santa Barbara
CA
93117
COMMON
06/21/2024
4802
1118235.02
10b5-1 Sales for MAURICE J. DUCA FAMILY TRUST U/ADTD 03/25/1981
70 Castilian Drive
Santa Barbara
CA
93117
COMMON
06/20/2024
4203
968132.05
10b5-1 Sales for MAURICE J. DUCA FAMILY TRUST U/ADTD 03/25/1981
70 Castilian Drive
Santa Barbara
CA
93117
COMMON
06/18/2024
2750
637905.95
10b5-1 Sales for MAURICE J. DUCA FAMILY TRUST U/ADTD 03/25/1981
70 Castilian Drive
Santa Barbara
CA
93117
COMMON
06/17/2024
2600
597097.80
10b5-1 Sales for MAURICE J. DUCA FAMILY TRUST U/ADTD 03/25/1981
70 Castilian Drive
Santa Barbara
CA
93117
COMMON
06/14/2024
2100
485527.77
07/23/2024
03/15/2024
/s/ Maurice Joseph Duca