Calculate Uma Musume support card affinity gains, bond levels, and optimize training events to maximize your horse girl's potential.
Support Card Settings
Bond Level
Results
The Uma Affinity Calculator helps players of Uma Musume: Pretty Derby calculate the affinity (bond) level between their horse girl and support cards. Affinity determines which training bonuses and unique events unlock during a training run. Higher affinity levels (orange, then rainbow) unlock powerful stat bonuses and special scenarios.
In Uma Musume, every time your horse girl trains with a support card character, she gains affinity points. The rate depends on the event type, support card rarity, and any active multipliers. Once affinity reaches certain thresholds (typically 21 for orange, 61 for rainbow), the bond level increases, unlocking additional training bonuses and unique story events.
Affinity (also called bond or kizuna) is the relationship level between your horse girl and a support card character. Higher affinity unlocks stronger training bonuses, unique events, and special skills during a training run.
Train with the support card character as often as possible, choose affinity-boosting dialogue options during events, and use support cards with high affinity gain rates. SSR cards typically offer higher affinity gains per event.
Green bond is 0–20, orange bond is 21–60, and rainbow bond is 61–100. Each level unlocks progressively better training bonuses and may trigger unique character events.