Is there an autosave feature on mobile?

I am new to Joplin and have not seemed able to find this option in the settings and was wondering if I should learn a bit of react native to bring this to the community.

I only searched on the IOS app does either the ios or droid version have it ?

I like to react to this post : it could be great to have an autosave mode on mobile, as it is usual to write a note on the fly and don’t have in mind to save it before its end.
It’s also curious : the app could sync every five minutes, but can’t save without a clic from the user (unless it means that syncing include saving) ?
As the mac os version save automatically without asking (don’t even now if that is a setting), the iOS (and also Android, I guess) version should save automatically. It willl be a really a safety feature.