So Marvin is not being maintained anymore? If so, that is bad since it is a paid app. Too bad there are no rules against dropping support of software without a timed interval from last sale to when support can be dropped. When I worked at Computer Associates back in the 1990s we had to legally maintain software applications for a set number of years after they were discontinued. But it is a different world now with cheap tablet apps that often tend to be low quality and are often developed by a non-professional. I know $5 isn't much, but if the developer sells it s/he should maintain it for a reasonable period. Free apps are different, but paid apps should come with at least a one year period of support.