Please note that purchases through Kagi and SWREG from residents of the EU will be subject to VAT. Purchases through PayPal or directly with Black Cat Systems by international money order or cash are not subject to VAT. This only applies to residents of the European Union.

Diet Sleuth is only $34.99, which entitles you to all updates and new versions released over the next full year, free of charge, which of course you can continue to use forever.

Click the button to the left to buy using your PayPal account.
Register by Credit Card
Click the button to order through our store at Kagi.
Register by Check or Money Order
You may also buy or renew Diet Sleuth by Personal Check or Money Order. Please print out the form to mail in your payment.
Registration Renewal
Previously customers can get another year's worth of updates of Diet Sleuth for only $15. Proof of prior purchase is required in order to receive the discounted price.