These tools already include the vocabulary lists for elementary, intermediate (and sometimes advanced) BJU Greek courses. Both are highly recommended.
These files include all the vocabulary forms for first and second year Greek in the BJU Greek Handbook, and can be imported into various vocab flashcard tools. Developed by Nathan Doucette.
These tools do not include vocab lists for the BJU curriculum but require you to prepare and upload your own vocabulary lists. Included here for reference.