I've been using Llamalab Automate a lot over the last few years. It' proper amazing.
The free version only allows flows with a total of 30 blocks running at the same time, which was enough for me for a very long time. I mostly got the full version because I wanted to support the developer. But now I do use bigger flows too.
It's very useful for all these little automation tasks that don't warrant a dedicated app for it.
The only downside of the app is the stupid name that makes it really hard to google anyting in regards to it unless you add "Llamalab" before it.
