What is Desktop version, what is Web/Mobile version?Desktop version is a Java application. You need to download etsviewer.jar to your computer and then run it using the java command as explained here.
Web/Mobile version is the version that you can access from any browser by going to http://webets.enthuware.com. You don't need to install anything. It has been optimised to work from your mobile devices. You don't need to install any special mobile app.
All versions contain the same questions and tests but your usage data such as test results/scores are not synched between the Desktop and the Web version.
Do I require internet connection for any version?You don't need internet connection for the Desktop version. You DO need internet connection for Web version.
Is the content i.e. the questions and explanations, same in all the versions??Yes, content is same in all. However, features of the simulators are different. For example, the desktop version allows you to customize tests but Web version does not. Please try the trial versions to make sure you are comfortable with the version you intend to use before purchase.
If I buy the software, can I repeat the tests?Yes, you can take any test any number of times in either of the access modes. However, access to Web/Mobile version is for a limited period only. So you cannot take tests on Web/Mobile version after the Web/Mobile license period expires.
Desktop license is not time limited. You can use it and take tests as long as you want. Customer support for Desktop version is for 6 months only. We do not provide any support whatsoever (installation or otherwise) after 6 months of purchase.
Does the software's content cover exactly the same as the Kindle Edition (if available)?Yes.
How can I do the tests on Kindle Edition?Kindle version is just an ebook. You can do the tests as if the tests are printed on paper. It is not interactive. You have to check the answer and decide yourself whether you answered correctly or not and keep your own score. You can download the sample from Amazon to understand how exactly it can be used.
If I buy the software, can I get updates when you update the software?Yes.
If I buy the Kindle Edition (in mobi format), can I get updates when you update the content?Yes, but they are a lot less frequent than the s/w version and we don't know when Amazon will push the update to your device. It is beyond our control.