For a while there were app size limits for downloading over mobile data. That meant that if your app was too big you'd have terrible growth metrics.
I remember Uber hit this pretty hard: https://news.ycombinator.com/item?id=26277501 & https://news.ycombinator.com/item?id=25376346 For them though the mobile-data thing was extra important since a first-time Uber user is likely to not be at home and needs the app in order to get home.
I remember Uber hit this pretty hard: https://news.ycombinator.com/item?id=26277501 & https://news.ycombinator.com/item?id=25376346 For them though the mobile-data thing was extra important since a first-time Uber user is likely to not be at home and needs the app in order to get home.