I'm sure you could give productivity apps a feeling of exclusivity by tightly restricting membership based on some exclusive criteria e.g. wealth, edu backgroun

I'm sure you could give productivity apps a feeling of exclusivity by tightly restricting membership based on some exclusive criteria e.g. wealth, edu background, zip code, etc. niche products aren't a bad thing if the niche is very rich Also wasn't this the idea behind that 20k iphone app that displays a picture of a red gem on your phone?