Good question
its a frequent problem in iOS app size
When downloaded, iOS apps contain all languages that an app supports, whereas on Android, a user will only download the languages they need
This is *one* of the reasons that Android apps are typically smaller than iOS
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There's over 20k files in the, gmail app, 17k of which are under 4 kB. In iOS, the minimum file size allocation is 4 kB, so having many small files causes unnecessary size bloat.
(again a reason why iOS apps are bigger than Android apps 🤷♂️)
A good thread about this issue I read a while back breaks it down further;
