The best way to ask a question is to use the Contact Us link above as questions are rarely duplicated.
1) I only want to use this for 1 day. Can I do that? No, the minimum is 1 month.
5) Is Younicycle available in other languages? Not yet, though that is high on our list of goals.
2) I don't want to have my site hosted here. Are there alternatives? Not yet. The Younicycle Server Package will be released soon. When it becomes available - you will be able to install on your own server or work with a different Host that installs on their servers.
3) I don't want to work online. Is there an alternative? See # 2 above.
4) I want to try this with Amazon (or whatever) Cloud. How can I do that? At this time, you can't.
6) Can I add my own PHP, CSS, JS? For PHP, you must use the provided Editor. For CSS & JS - yes you can add your own and also use the provided editors. Upload as 'Files'.
7) Is created content 'portable'? In most instances, yes. You can export nearly every type of object to your desktop. A comprehensive 'bundler' for all objects is under development. When ready, you will be able to create here - and then move to your local system - and vice versa.
8) What is the distinctive difference between the 2 Plans, DB Developer vs Web Developer?The DB Developer allows you to work internally, without direct display of created content to the 'web' (public facing) content. More intensive data operations are possible, in addition to creation of PDFs. The Web Developer allows you to design, manage content & work internally with the goal of producing content that faces the public. SEO and other management Tools are available that are suited to the 'public facing' goal. The Pro Developer gives you the power and flexibility of both plans.