Upgrades | Exchanges

All products are available for Windows or macOS, and a license of any product is moveable: it can be permanently deactivated on one device & reactivated on a new one.

When an upgrade or product exchange is necessary, the table below explains when we refund & how we calculate coupon credits, to be fair to all our licensees. Contact us if you want to change your existing product (and we’ll need your license details).


DSP Filter Design Software Upgrade Table*If the coupon value exceeds the price of the replacement product purchased, an additional coupon (for the remaining credit) will be issued for use with another future payment (such as an additional license, or second-year subscription payment).