Purchase with any major credit or debit card by clicking the button below.

Note that you do not need a PayPal account to complete the transaction.

Your license will work on any of the supported platforms (Windows, Mac, or Linux), and you may install simultaneously on up to three personally owned devices. Please allow up to 24 hours for license fulfillment.

Upgrading from CurveExpert Basic

Registered users of CurveExpert Basic can upgrade to either CurveExpert Pro or GraphExpert Pro at a discount price of $35.  Visit the registered users area to upgrade, using the same password given to install CurveExpert Basic.

Upgrading from CurveExpert Pro 1.x to 2.x

Registered users of CurveExpert Pro 1.x can upgrade to 2.x at a discount price of $15.  Visit the registered users area to upgrade, using the same password given in your licensing email for CurveExpert Pro 1.x.

Site Licenses or Non-Paypal Ordering

For large orders of CurveExpert Professional (multiple copies), discounted purchase prices are available; please contact me for an appropriate purchase link. For a single copy order using a non-PayPal credit card processor, please click the following link:

Buy CurveExpert Professional

Purchase with any major credit or debit card by clicking the button below.

Note that you do not need a PayPal account to complete the transaction.

Your license will work on any of the supported platforms (Windows, Mac, or Linux), and you may install simultaneously on up to three personally owned devices. Please allow up to 24 hours for license fulfillment.

Site Licenses or Non-Paypal Ordering

For large orders of GraphExpert Professional (multiple copies), discounted purchase prices are available; please contact me for an appropriate purchase link. For a single copy order using a non-PayPal credit card processor, please click the following link:

Buy GraphExpert Professional