Darts Checkout Trainer

A practice and quiz app to help you master checkout arrangements in darts 01 games (501, 301, 101).

**[Practice Mode]**
Tap the dartboard to input each throw, just like a real match. Your remaining score updates in real time with instant bust and checkout detection. Use the undo button to cancel your last throw, and toggle hints to see recommended checkout routes as you practice.

**[Arrangement Dictionary]**
Browse standard checkout routes for every score from 2 to 170. Routes are organized by 1-throw, 2-throw, and 3-throw finishes, with multiple options shown so you can find the style that suits you.

**[Test Mode]**
Challenge yourself with 10 quiz questions. Each question has a 10-second countdown to simulate real match pressure. Review your score and results after each test session.

**[Key Features]**
- Dartboard UI with tap input (Single, Double, Triple, Bull)
- Automatic bust and checkout detection
- Finish rule options: Double Out / Master Out / Straight Out
- Bull settings: Separate (S-Bull=25pt) / Fat Bull (both=50pt)
- Start score: 101 / 301 / 501
- Hint mode showing recommended arrangements
- Japanese / English language support

**[Who is this for?]**
- Beginner to intermediate darts players wanting to learn checkouts
- Players looking to drill specific scores
- Anyone who wants to test their arrangement knowledge under pressure

Recent changes:
Added timer setting for quiz mode

You can now set a countdown timer for quiz mode.
Choose your answer time anywhere from 10 seconds to 5 minutes
to practice at your own pace.