Contar las páginas en PDF (para personas no técnicas que usan mac)

Simple.

Crea un Apple script y expórtalo como una Aplicación y luego envíale la Aplicación.

Código AppleScript:

set totalPages to 0
set numDocs to 1
set myFiles to choose file with prompt "Select all PDF's" with multiple selections allowed
set nummyFiles to length of myFiles
set progress total steps to nummyFiles
set progress completed steps to 0
set progress description to "Processing PDF's..."
set progress additional description to "Preparing to process."
repeat with i in myFiles
    set progress additional description to "Processing PDF " & numDocs & " of " & nummyFiles
    set progress completed steps to numDocs
    set myfile to POSIX path of i
    set pageCount to (do shell script "/usr/bin/mdls " & quoted form of myfile & " | /usr/bin/awk '/kMDItemNumberOfPages/{print $3}'") as integer
    set totalPages to (totalPages + pageCount)
    set numDocs to (numDocs + 1)
end repeat
display dialog "There are " & totalPages & " pages in this PDF"

1. Abrir /Applications/Utilities/Script Editor.app
2. Archivo>Nuevo
3. Copiar y pegar el código anterior
4. Archivo>Exportar
5. Formato de archivo: Aplicación
6. Enviar aplicación exportada