It's been almost a year since I finished the development of MyAnthem and I'd like to summarize my experience so far.
The development team consisted of two people. I did the entire coding part and a friend of mine took care of graphics, general aesthetics of the app and social media presence. All in all we spent about 5-6 months building the app from scratch, without any previous experience in Android development. There's still a feature or two that I'd like to add to the app but I couldn't find the necessary motivation to start working again, even if I started coding one of the features already one or two times.
Overall things are not looking as good as I hoped. The app had little impact on the market and it generated less then 5 euros from ads. The total number of downloads shown in Google Play Developer Console is around 700, with a retention rate of around 20%. Using Google Analytics I see that the activity is rather steady, 400-500 sessions every month. In the beginning the session number/month was below 200 this but has increased steadily and for the past few months has remained to this figure.
Regarding marketing and promotion, in the beginning we focused on a strong social presence and an 50 euro ad campaign on Facebook. The app has it's own web page www.myanthemapp.com, Facebook account, Google+ account, Twitter account and YouTube channel. We even made a promotional video and published it on the YouTube channel. On Facebook we started a campaign called Anthems Around the World. The campaign consists of a series of "Did you know" cards with interesting facts about various national anthems around the world. Periodically posts were published on app's page on Facebook wishing Happy National Day to various countries arround the World that were celebrating in that day their National Day.
So far we only had one review published on Recovery-Android.com, even if promotional emails were sent to several online publications.
All in all we gained a lot of experience from working on this project, even if it didn't catch the expected attention on the Google Play Market. The entire concept had a very limited audience, because let's face it, who listens to National Anthems these days?
Looking forward to finding an idea that is worth turning into an Android Application!