Calendarscope is a good example of a free to use application. This is because it is not used for advertising, it is simply an application that can be used. The thing about this kind of application is that, it is free to use, but there are limitations that come with free applications. If you find the free version of Calendarscope to be effective, then you can buy the program. While some people will argue that they do not need to spend money on software like this, there are many times that you may find that you will use something for which you have paid for.
When looking at downloading applications, be sure that you do not sign up for anything just because it is free. If you sign up for something that is free, then you are accepting the risk that the software may be "shady" or not as reliable as a program that is downloaded from the Internet. Be sure that you do some research and find out if there is any reliability rating or feedback that comes with the application. This way, if you choose to purchase the application, you will be able to make a good decision and if the software is bad, you can make your purchase back from the developer. It is also possible that you may download free programs that work as well as the paid programs, but be sure that you are aware of the difference between paid and free software before you spend your money.
Free programs like Calendarscope allow you to make use of the application without purchasing it. This allows you to test out the product without investing any money. This is useful when the product is new, but it is not fully developed. After a few hours, if the application is as good as you expected, you can upgrade to a paid version. Be sure that you check out the use of the software by downloading free software and go from there.