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Each copy allows activation on one computer. To install the app on more computers, you need a license with the corresponding number of copies. After purchase, you will receive a license code to unlock the app. You can get your license code re-sent if necessary.
If you make a new purchase using the same name and same email address as an existing license, new copies are added to this license. You will receive a license code that includes the combined number of copies.
If you need to get a license with a name that differs from the one on the billing address, make the order on the store.
Payment requires a Visa, MasterCard, or American Expres card. Payment details are handled securely using Stripe. You can also choose Bitcoin as a currency and pay directly using the network.
Mac App Store
Gamma Control can also be purchased via Apple on the Mac App Store.
If you have trouble placing a purchase, or for any other question, please contact firstname.lastname@example.org.