How this Mii compatibility score works
Tomodachi Life: Living the Dream gives each Mii a profile shaped by personality, dating preferences, voices, quirks, and the player's choices. Nintendo has not published a public formula that guarantees friendships, dating, marriage, or babies, so this calculator is an entertainment tool rather than official game data. It compares two profiles using a simple deterministic model: similar Energy, Optimism, and Tidiness values raise the score, while matching or complementary personality types add a bonus.
Use the result as a playful planning aid when you create island residents. A high score suggests the two Miis have compatible traits in this fan-made model, while a lower score can still be fun because island drama is part of the appeal. For real gameplay, keep giving Miis chances to meet, watch their reactions, answer prompts, and pay attention to the preferences the game reveals over time.