TinyBooks:

[db]

Quote from them:
TinyBooks (currently for Macintosh only) is an ultra-simple accounting
and bookkeeping program designed for home and small businesses and
perfect for Sole Proprietors.

TinyBooks is a flexible, non-bloated, single-entry bookkeeping program
and the perfect companion to help with taxes throughout and especially
at the end of the year. Though designed with small businesses in mind,
it can also be used in the home to help with the family finances.

http://www.mv.com/ipusers/spacetime/ftinybooks.html