My company has "apps" on n8n, Zapier, and Make. I've used them all and they're fairly similar: they make integration of supported platforms easy and support simple automation workflows.
E.g. if x happens on y platform, get relevant data, process it, send me a text message if it's during the day or email me if it's at night/weekend.
It's frequently faster than building out the integrations yourself, and is more accessible to inexperienced programmers/ less technical folks.
In terms of ease of use, I'd rank it: Zapier (top), Make, n8n. Same ranking for available apps. Complexity of workflows I'd rank those in reverse though. You can do more with n8n.