Comment by yen223
Yes, there's an option in the hamburger menu to edit queries manually, and that will allow you to type in (or paste in) the query by hand.
Re. the saved query restriction - I am planning to work on this app in the long term, which unfortunately means I have to monetise the app in order to sustain development work.
I believe restricting saved queries and saved connections is a good compromise to allow casual users to try out all the features the app has to offer, without imposing a time limit.