Practical by design
Compare options quickly, understand the result, and move straight back into your training run.
Built for better training decisions
Meet UmaTools
A free, independent Uma Musume companion that turns dense game systems into clear, practical decisions—from the next skill you buy to the support deck you bring.
- 9reference documents
- EN + JPinterface support
- 0accounts required
Why it exists
Less guesswork. More useful runs.
Uma Musume asks players to balance ratings, skills, course conditions, stamina, support cards, and scenario resources. UmaTools brings those choices into one consistent workspace, with the underlying logic documented alongside the calculators.
Private by default
No account is needed. Supported saves remain in your browser, and sharing stays in your control.
Open about the math
Detailed documentation explains scoring models, assumptions, limitations, and how each tool reaches its answer.
Complete reference library
Nine documents, organized around the decisions you make
Start with a goal below or visit the dedicated documentation hub to browse the full library.
Build smarter
Rating & skills
Core systems
Rating and Skill Optimization
Learn stat scoring, skill value, discounts, dependencies, optimization modes, and
every rating rank.
Read document
Competitive planning
Team Trials Skill Selection
Understand activation probability, Wisdom, course coverage, dependencies, and
expected value.
Read document
Prepare for the course
Race planning
Timing windows
Acceleration Skill Timing
See which acceleration skills can activate in a useful last-spurt window and why
race conditions matter.
Read document
Race requirements
Stamina Calculator
Follow the stamina model through stat adjustments, recovery skills, phase costs,
and result thresholds.
Read document
Shape the training run
Decks & scenarios
Support planning
Deck Builder
Build support decks, then learn the limit-break rules, compatibility score,
templates, skill-hint hand-offs, and saved state.
Read document
Grand Live
Grand Live Token Planner
Plan songs, calculate remaining Performance tokens, use presets, and understand
planner state.
Read document
Understand the toolkit
Using & improving UmaTools
Event tools
Event OCR and Skill Recognition
See how screenshots move through preprocessing, OCR, fuzzy matching, confidence
checks, and corrections.
Read document
Privacy & sharing
Local Data and Share Links
Learn what stays in your browser, what a shared URL contains, and how to inspect
or reset saved data.
Read document
Contributing
Contributing Translations
Work with shared translation modules, fallback rules, placeholders, HTML
attributes, and validation.
Read document
One connected workflow
From question to confident choice
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1
Set the context
Choose your server, character, course, stats, budget, or support cards.
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2
Compare the options
Use focused calculators and searchable data to see the tradeoffs clearly.
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3
Understand the answer
Open the related document whenever you want the model, assumptions, or limitations.
Independent and community-minded
A fan project that stays useful by staying open
UmaTools is open source under the GNU GPL v3. Game data is sourced from GameTora and GameWith. The project is independent and is not affiliated with Cygames.