There is a major distinction between the game's official feature and the automated scripts found online:
This is a permanent in-game purchase (costing approximately 2,700 Robux) that notifies you when a fruit spawns and shows your distance from it in meters. It requires manual travel to the fruit's location. Blox Fruits - Fruit finder (autofarmer)
Automatically kills NPCs to gain XP and reach max level (currently 2750 in some versions) without player input. There is a major distinction between the game's
Automatically switches servers to find one where a fruit has already spawned or is about to. Critical Risks and Safety Blox Fruits - Fruit finder (autofarmer)