Simplify the following text for a Grade 7 native English-speaking person.
Original: In 2007 , Apple released iWork ' 08 , which contained a new spreadsheet application , Numbers .
Simplified: New versions of Pages and Keynote were introduced , as was a new spreadsheet application , Numbers . Despite this , hard disk space requirements were reduced from 1.85 GB in iWork '06 to 690 MB in iWork ' 08 .