You are a registered user of calcPad and want to upgrade to SFR Calculator 2.x? You can purchase an upgrade license at a reduced price in our online shop ShareIt. Use the link below to purchase the upgrade now and send your old license key to our support mailbox: support@sfr-software.com. You will receive the new registration key within three business days. Purchase SFR Calculator Upgrade

SFR upgrade policy

Registered users of SFR software may download and use a new minor update of their purchased software free of charge. The license key should still be valid. A major update of SFR software is normally charged with an upgrade fee, so registered users may upgrade at a reduced price. If you purchase SFR software within one month before the official release date of a new major version, you can acquire a new license key for this software for free.