Pokémon Auto-Grind & cheats

Supported games

Auto-Grind reads the game's memory directly, so it knows when a battle starts, which moves have PP left and whether the opponent is Shiny. It works with the English releases of the five Generation 3 GBA games:

FireRed, LeafGreen, Emerald, Ruby and Sapphire. ROM hacks built on these games often work too, but aren't guaranteed.

Turn it on

1. Start one of the supported games and walk your lead Pokémon into a patch of tall grass.
2. Open the in-game menu ☰ and make sure AUTO PLAY POKÉMON is ticked. An AUTO button appears in the control row.
3. Tap AUTO and choose which moves Auto-Grind may use. Live PP for each move is shown so you can pick efficient ones.
4. Put the device down. Tap AUTO again whenever you want to take back control.

What it does for you

• Grass patrol — walks exactly one tile left and right (no drifting off the patch) to trigger encounters. While grinding, the game runs at 3× speed.
• Battles — selects your chosen attacks and rotates to the next move when one runs out of PP.
• Shiny alert — the game freezes, the device vibrates and an alarm plays the instant a Shiny appears, so you never accidentally knock it out.
• Move learning — when a Pokémon with four moves wants to learn a fifth, Auto-Grind stops so you decide what to forget.
• Egg hatching — rides your bike in a loop at high speed until the egg hatches.

Built-in cheat engine

Retrofun ships with 2,269 cheat codes for 42 Pokémon games and ROM hacks, plus support for your own GameShark, Action Replay and CodeBreaker codes.

1. Open the in-game menu ☰ and tap CHEATS.
2. Search for what you want — "Rare Candy", "Master Ball", "walk through walls" — and toggle it on.
3. To add your own code, tap the custom code button, paste the code and give it a name. GameShark master codes are added for you.

Looking for wild-encounter codes for a specific Pokémon? The online Pokémon cheats database lists 970+ species with one-tap copy.