I have never heard of that app, and even though I know a lot of famous people use these kind of apps to get more likes/views on social media, I'm very surprised to see Ana (or whoever handles her social media) do this, it just doesn't seem really like something she would do/care for. She seems to like her social media, but not to the point where she's like "I have to have a ton of likes or I'll be sad" like many others are... Weird.