1989 marked the nearing of the end.  Apple Computer, Inc. bought APDA from A.P.P.L.E. for $3 Million USD.  The staff were reduced from 72 to 10 by Don Williams.  The entire magazine ceased to exist as of August due to the fact that the decision to make it a Quarterly never really panned out due to the efforts put into Mac Tech Quarterly by the remaining staff.