What's the best Check Book app for Mac OS?

Can someone recommend a good application to reconcile my personal checking account on my iMac?

Background:

I've happily used CheckBook Pro for several years. It allowed me to make credit and debit entries from my monthly bank statement followed by a reconciliation. Now, sadly, it will NOT open on my iMac. After doing a little research at their website, it appears that CheckBook Pro is now only compatible with the Windoze operating system.

(I'd prefer more than what's offered in the Numbers app.)

Thanks in advance for any guidance.