Andrea Vahl said
7 months, 2 weeks ago: I think advertising an app does help initially, @albertmora Hopefully your App is good and once you get a base of users they may share the app with others. Or it also depends on the app permissions you get – are people posting somewhere when they use your app?
Traditional marketing also works well – get the word out to bloggers that have an audience that may be interested in your app.
A lot of it depends on what the app is – is it a game, is it for business, do people have to pay for it? How many users do you have now and are people still using it continuously? Hard to say what the best plan is because a lot of factors are involved.