Solomon is available as a web application for a recurring $15 monthly subscription.  Included are six calculators, plus a comprehensive User's Manual.  You may cancel at any time.

Solomon Plus includes the original six calculators plus four more that were formerly Excel spreadsheet supplements called Sidekick. Solomon Plus is a recurring $30 monthly subscription that can be cancelled any time.

Annual subscriptions are $150 for Solomon and $300 for Solomon Plus. Like getting two months free. 

Use a major credit card in our secure Stripe checkout.  

There is a one-time 14 day demo available free of charge that includes all ten calculators.