Share Minecraft PE world with a friend?

A friend and I started a Minecraft world yesterday, the problem is he doesn't have the world and can only play online, but he also wants to be able to play it alone.

I know that you can set different levels (visitor, member, operator) but how can I make him play whenever he wants and I don't have to be online?

Is there a solution?

I don't think that's possible. Maybe with Minecraft Realms.

You have to rent a server. Approx. 4 euro per month. There can be 4 people on it at the same time. At any time.
you can set what you want to set on the page where you get the server.
Nitrado is one of those. So we have ours.

Minecraft Realms is the only solution.

edit:

or an Aternos PE server host would also work but then it must always start the server.