If you want to use all its functions or cancel the use restrictions, you must pay.
Free software must be completely free. ..
1. Shareware is copyrighted software sold on a "use first and pay later" basis. According to the authorization of the shareware author, users can get their copies from various channels for free, and they can also spread them freely. Users can use or try shareware at any time, and then pay the author after they think they are satisfied; If you don't think it is worth your money, you can stop using it. You can use more than 40 kinds of credit cards, debit cards and ATM cards for online payment, and you can also use post office remittance or bank remittance to register your favorite software. Shareware usually has certain function restrictions before registration, such as time limit, frequency limit, incomplete function and so on. After users are satisfied with the shared software, they can pay a certain registration fee to the software author and get the authorization to use the corresponding version of the software, that is, they become official users.
2. Free software means that you can use the software freely and freely and copy it to others, and you don't have to pay any fees to the author of the program, and there will be no date limit or restriction on the use of the software. However, when copying to others, the complete software file must be copied to others, and no fees shall be charged or converted to other commercial purposes. Without the consent of the program author, the program code of the software cannot be modified, otherwise it will be regarded as infringement.