The program is free for use, but we need your donation. The action of your donation will not affect any feature of the program. You have the freedom of choice to support the developers through your donations. But this donation is only for the program development (not for voice). This will be a supportive strength for the developers.
The donation function is processed through "PayPal" system, we will not obtain any information about your privacy. After pressing "confirm donation", it will be transferred to the PayPal system, using SSL encryption technologies in the process of communication!