# Uma Race Simulator (Umalator) > Uma Race Simulator is a free, powerful online tool for Umamusume Pretty Derby players to simulate races, optimize character builds, and test strategies without spending in-game resources. ## Core Features - `https://umaracesimulator.blog/`: Main simulator interface for testing builds and running race simulations. - `https://umaracesimulator.blog/#how-to-use`: Step-by-step guide on how to configure simulations and interpret results. ## Key Resources - `https://umaracesimulator.blog/#faq`: Frequently Asked Questions about simulation accuracy, stats, and mechanics. - `https://umaracesimulator.blog/tools/umamusume-tier-list-maker/`: Free drag-and-drop Umamusume tier list maker for characters, support cards, skills, and Champions Meeting planning. - `https://umaracesimulator.blog/tools/umamusume-race-bonus-calculator/`: Free Umamusume race bonus calculator for comparing support-card race bonus, race count, wins, and bonus-weighted training value. - `https://umaracesimulator.blog/blog/vfalator-vs-umalator-kachi-fork-guide/`: Explanation of VFalator, Umalator, Kachi Umalator, and common simulator naming differences. - `https://umaracesimulator.blog/blog/umamusume-support-card-tier-list-guide/`: Guide to reading Umamusume support card tier lists by role, limit break, race distance, and simulator validation. - `https://umaracesimulator.blog/blog/umamusume-character-tier-list-guide/`: Guide to reading Umamusume character tier lists by distance, running style, inheritance, account fit, and simulator validation. - `https://umaracesimulator.blog/blog/umamusume-skill-tier-list-guide/`: Guide to choosing Umamusume skills by distance, running style, trigger timing, stamina needs, and simulator validation. - `https://umaracesimulator.blog/blog/umamusume-skill-activation-guide/`: Guide to skill activation conditions, Wit, race timing, eligibility checks, and repeatable validation for Umamusume builds. - `https://umaracesimulator.blog/blog/umamusume-champions-meeting-guide/`: Course-first Champions Meeting guide covering event progression, three-runner team roles, stamina, acceleration, and simulator validation. - `https://umaracesimulator.blog/blog/umamusume-spurt-rate-guide/`: Umalator Spurt Rate troubleshooting guide covering 0% results, Survival differences, stamina and recovery tests, targets, and simulator limits. - `https://umaracesimulator.blog/blog/umamusume-friend-finder-guide/`: Guide to finding public Trainer IDs by borrowed support card, parent factors, affinity, server, and record freshness before verifying the profile in game. - `https://umaracesimulator.blog/blog/umamusume-team-trials-guide/`: Team Trials guide covering Sprint, Mile, Medium, Long, and Dirt roster coverage, score interpretation, role planning, and promotion review. - `https://umaracesimulator.blog/blog/umamusume-training-guide/`: Race-first Umamusume training guide covering stat priorities, support-card roles, inheritance, turn decisions, and final build checks. - `https://umaracesimulator.blog/blog/`: Index of Umamusume simulator guides, tier list guides, inheritance articles, and race planning resources. - `https://umaracesimulator.blog/about`: Information about the project, its mission, and the team behind it. - `https://umaracesimulator.blog/privacy-policy`: Details on how we protect user data and privacy. ## Latest Updates - `https://umaracesimulator.blog/`: Updated for latest game mechanics and Champions Meeting preparation (February 2026).