Since its initial release in February 2017, Fire Emblem Heroes has been downloaded over 5 million times on the Google Play Store for Android.
The information comes from the Google Play Store charts, however it doesn’t give an exact figure, the app is estimated to have brought in between 5-10 million downloads.
Fire Emblem Heroes is a free-to-start mobile game with in-app purchases. It’s available on both Android and IOS.

I thought it was more. Oh, well.
This is great to hear, I am currently loving the game and sitting around 80 5-star units (hoping to snatch that Valentine Hector tomorrow, though).
That’s pretty Low compared to the other good performers in the play store… But it’s profitable, which means it was well monetized… So good for Nintendo.