Which game engine is suitable for creating games for iOS for a beginner?

Question

iOS

Everyone talks about Unity, but it costs some money. I tried in XCode on Swift, but as I understand it, only functionality is possible there, and therefore a game engine is needed so that graphics can also be

Answer 1

If 2d then you can cocos2d

Answer 2

but it costs some money.

The basic version is free.
This is the best choice to start.

Answer 3

unity. It's free, simple, and cross-platform. Very low entry threshold and this is important.

Answer 4

Recently, UE4 went free, except that it will take 5% of the income per game