I used this app frequently with past characters and it is a great way to discover ingredient properties and maximize your potions. Since Ive installed Perkus Maximus, however, I dont use the app as much. Perkus has made significant changes to the game and the recipes in this app do not always give the intended result. Fortify smithing is one example. With Perkus installed, following the app recipe now creates a brawling potion instead. This is, of course, no fault of the app, but I do hope that there is a Perkus friendly update in the works. With that in mind, Im rating it 4 of 5. If a Perkus update comes in, then I would have to consider it a 5.