Minecraft Pocket Edition Realms cross-play with PC or Mac? [closed]

Minecraft noob here and I have several questions regarding pocket edition and realms. I'm interested in purchasing Realms for me and my two kids who know much more about Minecraft than I do but they have never used realms.

1. The oldest plays PC Minecraft but also has an iMac he could use, the youngest uses Pocket Edition on a tablet while I have a Macs. Both of them like Android and I have iPhone. Looking at the purchase page for Realms it's asking me to choose between iOS/Android or Mac/PC. So does this mean we're limited to our options here? My youngest doesn't have the skillset yet to do anything with computers so that would mean the rest of us would be limited to Pocket Edition as well? I'd like to be able to play on the Mac/PC when available and then pick up a phone at some other time on the go and play in the same world. Possible?

2. What is the world size on Pocket Edition Realms? I tried searching for it but can only find info on PC Realms.

3. Can you change the Realm type later? Ie if I do go with Pocket Edition realms can I change it to PC/Mac later on? I'm asking because I'm assuming the answer to #1 above is going to be segregated from PC and mobile realms.

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1 Answer

There are currently two version branches of Minecraft:
the "Bedrock Edition" for iOS, Android, Windows 10, PS4, XBOX and Switch,
as well as the Java-written Java Edition for any Windows version, macOS and Linux.

Both are currently in further development.
All Bedrock Edition players can only engage in crossplay with other Bedrock Edition players.
All Java Edition players can only engage in crossplay with other Jave Edition players.

A Minecraft Realms subscription is limited to either the Bedrock or Java branch.
This is because the Java and Bedrock edition are different in enough ways that they can't smoothly interact, and that worlds from one can't be used in the other.

For the Java Edition, a feasible alternative to Realms is setting up a self-hosted server on a computer of your choosing.
Both Editions allow players to open up their game to users in the same LAN, limiting multiplayer to local play.

For both Editions, there are publicly hosted Servers.
Some of these allow Jave-Bedrock crossplay, but that's always implemented by the server owners and can limit the possibilities on that server.

As for Size and other differences, I can't help, but point you here:

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