What size should the course picture be to be displayed nicely on the web and in the iOS/android app? The web image is square, and memrise itself uses 400x400 pixel for it’s own courses. The same size is also mentioned here: Course pic dimensions/size?
But on iOS, it’s more complicated. I just added a word to the title of the course, and it wraps now to two lines on an iPhone 6, and the picture changes from squarish to much longer, yikes.