Advantages:
Vast variety of good-looking templates;
Paper texture in postproduction step;
Image correction;
Fonts!
Disadvantages:
Impossible to change size, color and location of graphical elements (i. e. borders, stickers, lines, curves);
No text effects (!!!) I cant add some shadows or gradient to text, thus it looks really flat and boring.
p.s. I want to say how grateful I am to developers of Phoster app. I use it almost every day and I havent seen any analogues or alternatives to it. Hope you will find a solution to get rid of disadvantages I mentioned hereinbefore. Thank you.
Cherles about Phoster, v1.5.6