The app may not have had the start that Mariomaker had, but it should do much better in the long run. Someone that bought Mariomaker is removed from the list of potential customers; while any player investing money in FE heroes early on is a potential whale. Revenue is currently accelerating, from the charts, and it's still getting a very impressive number of new users (data on thinkgaming).
Edit: Internationally first on google play. That's a good 4 million a day, plus perhaps 2 on ios - 6 million a day. This should be fast.
https://thinkgaming.com/app-sales-data/device/gplay/country/all/date/2017-02-10/group/day/
https://thinkgaming.com/app-sales-data/device/iphone/country/all/date/2017-02-10/group/day/
It holds well, having appeal both in the west and Japan.
Bet with PeH:
I win if Arms sells over 700 000 units worldwide by the end of 2017.
Bet with WagnerPaiva:
I win if Emmanuel Macron wins the french presidential election May 7th 2017.
