Minecraft on Nintendo Switch to ios

Unfortunately you will not be able to transfer your worlds from one platform to the other.

Some of the content that is in the Marketplace will not be transferable between the different platforms. Some of them are and you will be able to install/download them from the Marketplace under your profile.

You just need to sign in with the same account that has purchased the content on the Switch.

Hello Aries,

Thank you for posting on the Xbox forums. As this question has been answered, we will be locking this thread. If you ever have another question or would like to start a discussion, don't hesitate to create a new thread.
We look forward to hearing more from you soon!

You could try to transfer your world by using Realms (which give you a free trial, but usually cost money).

You host your world on a Realm, and then connect with your other device to that Realm.

The process is described here (this is a cached copy of a support article that was removed from the official site, so I don't know if that method still works).

Be aware however, that this creates an independent copy of the game on each device. So changes you make on one device will NOT show up on the other devices, unless you keep the world on a Realm server that will cost you money!

Your world is not cross-platform, and non-exclusive items you buy in the marketplace can be cross-platform

Hello, Paynter!

Minecraft Bedrock Edition supports cross-platform play with Xbox One, Playstation 4, Windows 10, Android, iOS, and Nintendo Switch. To play with someone on Minecraft, you'll need a Microsoft account to do so, no matter the platform.

I hope this helps!