Solar Ship Studios

Can anyone recommend a split-screen video app that DOESN’T require a subscription? I’m really annoyed with apps that are “free” if you want to download them and look at others’ content, but which require a subscription to post content that you’ve generated. It’s bonkers. I’m paying to generate content that others can watch for free?!? It’s like if artists had to pay a ton of money to make a record and then everyone expected to be able to listen to it for free! What kind of ass-backward world….oh…wait a minute…
But seriously though. If I want to make a video that’s 4 of me all playing a song in multiple parts and share it without paying a subscription, is there a way to do it?