Cronloop is more of a control plane that makes it nicer & more scalable once you have many agents and need to monitor / refine them over time.
Create & manage unlimited agents in one place, they all run in the cloud - no machine to manage and keep online yourself, easily monitor and analyze runs (agent runs stream in real-time), tune the agent with run duration constraints, give it the ability to self-improve with the built-in durable memory system without having to invent your own, connecting tools is very simple (200+ supported in the connector library).
It also runs codex, not just claude code.
I currently have ~25 cronloop agents running on various models between codex/claude.
Running them all on /loop would be painful and hard to maintain without cronloop or a similar control plane.