Apple (AAPL) 10-Q 2003 Q1 Quarterly report

QuickLinks -- Click here to rapidly navigate through this document

Exhibit 99.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER AND CHIEF FINANCIAL OFFICER
PURSUANT TO
18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

I, Steven P. Jobs, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Quarterly Report of Apple Computer, Inc. on Form 10-Q for the period ended December 28, 2002 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and that information contained in such Form 10-Q fairly presents in all material respects the financial condition and results of operations of Apple Computer, Inc.

By:	/s/ Steven P. Jobs
	Steven P. Jobs Chief Executive Officer

I, Fred D. Anderson, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Quarterly Report of Apple Computer, Inc. on Form 10-Q for the period ended December 28, 2002 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and that information contained in such Form 10-Q fairly presents in all material respects the financial condition and results of operations of Apple Computer, Inc.

By:	/s/ Fred D. Anderson
	Fred D. Anderson Executive Vice President and Chief Financial Officer

QuickLinks

Exhibit 99.1