Uma Musume Affinity Calculator
Find the perfect breeding combination for Double Circle (◎) Inheritance.
1. Select Your Training Uma & Legacies
2. G1 Race Win Bonus Calculation (New Formula)
Enter the total number of identical G1 race wins shared between the main Uma and her legacies. Each shared win provides a substantial bonus.
Understanding Uma Musume Inheritance & Affinity
Affinity, or Compatibility, is a hidden score in Uma Musume: Pretty Derby that determines the probability of receiving strong legacy stat boosts (Sparks) during the inheritance phase. Higher affinity, especially achieving the coveted **Double Circle (◎)** rating, drastically increases the chances of a successful training run.
The Key to Double Circle (◎)
The Double Circle rating is generally achieved when the total affinity score reaches **151 points or higher**. This tool helps you plan your parent and grandparent pairings to hit this critical breakpoint. The score is calculated based on:
- **Base Compatibility:** A pre-set score based on the relationship groups between the Main Uma and her two Legacies.
- **G1 Race Bonuses:** The most significant variable factor. Winning the exact same G1 races between paired Umas (Main/Legacy 1, Main/Legacy 2, Legacy 1/Legacy 2) adds +3 points per shared win.