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

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2009-11-20</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001315320</issuerCik>
        <issuerName>InfoLogix Inc</issuerName>
        <issuerTradingSymbol>IFLG</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001411301</rptOwnerCik>
            <rptOwnerName>Gulian David T.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O INFOLOGIX, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>101 E. COUNTY LINE ROAD</rptOwnerStreet2>
            <rptOwnerCity>HATBORO</rptOwnerCity>
            <rptOwnerState>PA</rptOwnerState>
            <rptOwnerZipCode>19040</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>President and CEO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Common Stock Warrant (Right to Buy)</value>
                <footnoteId id="F1"/>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>50</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2009-11-20</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F2"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>30000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F3"/>
            </exerciseDate>
            <expirationDate>
                <value>2011-11-29</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock, par value $0.00001 per share</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>30000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Common Stock Warrant (Right to Buy)</value>
                <footnoteId id="F1"/>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>1.8575</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2009-11-20</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F4"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>30000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                    <footnoteId id="F4"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F5"/>
            </exerciseDate>
            <expirationDate>
                <value>2011-11-29</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock, par value $0.00001 per share</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>30000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>30000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">On January 5, 2010, InfoLogix, Inc. effected a one-for-twenty-five reverse stock split of its issued and outstanding shares of common stock, par value $0.00001 per share.  Proportional adjustments were made to the exercise price and number of shares of common stock underlying the warrants.  The share amounts and exercise prices included on this Form 4 reflect the impact of the reverse stock split.</footnote>
        <footnote id="F2">The reporting person agreed to cancellation of the outstanding warrant in return for issuance of a new warrant to acquire shares of common stock, par value $0.00001 per share of InfoLogix, Inc.</footnote>
        <footnote id="F3">The warrant, which was issued on November 29, 2006, vested 25% on November 29, 2007 and 625 shares underlying the warrant were to vest monthly thereafter until all shares were fully vested.</footnote>
        <footnote id="F4">The reporting person received this warrant in return for agreeing to the cancellation of an outstanding warrant to acquire shares of common stock, par value $0.00001 per share of InfoLogix, Inc.</footnote>
        <footnote id="F5">The warrant vested with respect to 23,750 shares underlying the warrant when InfoLogix, Inc. filed an amendment of its certificate of incorporation with the Delaware Secretary of State on January 5, 2010 and, starting February 28, 2010, 625 shares shall vest monthly until all shares are fully vested.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ John A. Roberts, as attorney-in-fact</signatureName>
        <signatureDate>2010-01-10</signatureDate>
    </ownerSignature>
</ownershipDocument>
