Excellent App though its name “VIPriser” is funny. It is a “must have tool” for all graphic designers and pre-press. There is a slight scope for improvement in its user interface, though. But it does a great job of what it is made for and does it pretty fast. I can't believe that such a useful app is made available for free.
The most useful feature of this app is (though the developer has not highlighted this!!) that it can let you “print booklet” and save that as PDF on your booklet. This is highly useful in creating montage (page orders with front & back) if you have to print a booklet in your office instead of printing press. You have to go through lot of pain if you have to do this manually. For example a A4 size 32 page booklet will have the page combinations such as cover page 32 - 01 and the back of it will be 02 - 31, and so on… This app will do it all by itself.
The only thing i don’t like about this app is that when you want to create high resolution file (300 ppi) it creates a large PDF file so, then i have to open that file in adobe acrobat to optimise for 300 ppi to get a normal printable file. Basically it doesn’t optimise the images included in your original indesign or illustrator file where as if you use acrobat that does it all. Well, then why not use the feature of “print booklet” built in the indesign or illustrator? Well, they don’t allow you to save the print file as PDF, thats why you’ll use VIPRiser. Some users reported error, may be their system is not configured properly or did not install properly. I am using latest OS El Capitan 10.11.6 on MacBook Pro (Retina, 15-inch, Late 2013), Processor 2.3 GHz Intel Core i7. I have installed on 3 other older iMacs running latest Mac OS and they are all working smoothly. Thank you app developer.