Nag screens!
I would just love to recommend this program, but the nag screens to get you to upgrade, are absolutely way too intrusive to enjoy the experience. There are 3 confusing popups just to use any of the pages and then a popup every time you change between one of the books. Changing between books is quite slow too. Text looks very nice though and it well done. Either charge right off the bat for a fully working program or reduce the nags screens.
Anyoo about
Siddur - Special Edition סדור