Save editors are most commonly used on the (Steam, Epic Games Store) since console save files are often encrypted or harder to access.
The power of a save editor lies in its granular control. You are not just adding money; you are rebuilding the entire state of the ranch. Key features include:
Instead of manually decrypting and editing raw save files (which are highly complex and prone to breaking), the Slime Rancher community highly recommends using an in-game inventory and world editor mod like the Cheat Menu