In 27 Instagram filters. This is exactly enough for most users of the service. The rest are additional applications like VSCO, in which there are a dozen filters. In Colorburn their thousand. And, according to assertions of the developers, each of them made by hand by professional photographers.
For the development of such a large number of filters from the creators it took two years. We can not say that they are unique. It is difficult to do a thousand absolutely dissimilar filters. Nevertheless, this amount will be enough for the publication of the three photos with different filters each day for a year.
In the appendix there is a basic photo editing functions: crop, frame, adjust contrast and brightness. Particularly exquisite frame to buy extra and look, to be honest, it does not matter.
According to the developers, Colorburn in the future will be filled with even more filters and all updates will be free. The app is definitely worth your 15 rubles, because, in fact, you pay 15 cents for every ten filters.