The Converter has always been intended for casual browsing — this information was always featured prominently on the home page. However, in time I discovered there are several people who are using the Converter for rather specific purposes: whether the purposes are professional, or related to research, or to a hobby, the default set of features included in the Converter are not enough to satisfy their needs. I decided it was high time the Converter catered to these specific needs as well. This is what the Premium version is all about.
The free version remains free, it's not crippled in any way, and does not expire — and it remains tailored for casual browsing, as it always was. In contrast, the Premium version is intended for the more technical people who need extra features for specific purposes beyond casual browsing.
Currently, the Premium version sports the following extra features:
Premium licenses include free upgrades while the license lasts, which gives you acces to all new premium features during that time.
Last but not least, I always thought that since a person buys a license, and a person uses the license, the license should be bound to people, not computers. As such, one license can be installed on any number of computers, as long as it's used by a single user.
TERMS AND CONDITIONS
By purchasing Premium license(s) of the Converter, you agree to the following terms and conditions, in addition to the Creative Commons Attribution-NoDerivs 3.0 Unported license, which you already agreed to by using the free version.
You may use the activation key on any number of computers, as long as you are the sole user of the software (that is, you may share the computers with other people, but may not share the software with other people); you may not share the activation key itself with other people, regardless of whether they use the same computer or not; you may not make the activation key public, in any way or form. Should you purchase multiple licenses, each one of them is bound by these terms and conditions for each of the licenses' respective user (that is, each user must act as if he/she had purchased one individual license, associated with one activation key — each user must use their own key on their respective computer(s); no one key may be shared by multiple individual users, regardless of how many licenses were purchased at once).
In light of the above, you specifically agree that the copyright owner(s) may unilaterally terminate your right to use the software, without prior notice, and without any compensation or reimbursment, if there are reasonable indicators that one of your activation keys is used by multiple users at once. Such indicators include, but are not limited to, using multiple IP addresses during short spans of time, alternating IP addresses during short spans of time, using multiple or alternating user agents during short spans of time, using multiple or alternating computer names during short spans of time.
All Converter Premium licenses have limited validity in time, explicitly determined by your purchase option.
After making a purchase, the activation key(s) you purchased will be sent via e-mail, in the next 10 business days, to the e-mail address you indicate in your order, or, if not specified, to the e-mail address associated with the PayPal account where the payment originated from. The activation keys' validity starts when the keys are sent via e-mail to the buyer, irrespective of whether the key owner(s) start using them or not. The copyright owners do not guarantee that the buyer's e-mail addresses are correct, or that the e-mail messages are received properly. Should the buyer not receive the activation key(s) on time, they are encouraged to contact the copyright owners via e-mail at email@example.com, in order to clarify the situation.
The Premium part of the software (the one you're purchasing a license for) is delievered as a web service. As such, you need Internet access every time you open a browser window for the Premium service to be activated; also, the Premium part is subject to the copyright owners' web server availability; we strive to ensure an overall of at least 99.5% availability for our online services, but there are no guarantees that this availability rate holds true for any specific period of time.