Rack Star Training
Master American Mahjong in 1–5 minute daily drills. Compare the free Soundcheck tier with Backstage VIP all-access.
Every drill is self-contained with instant explanatory feedback. Practice anytime at your own pace.
| Feature / Drill | Soundcheck (Free) | VIP All-Access | Description |
|---|---|---|---|
| Track 1: Read the Tiles (Instant Recognition) | |||
| Tile Jam: Suit Shuffle | ✓ | ✓ | Drag tiles into Bams, Cracks, Dots, Winds, Dragons, Flowers, and Jokers |
| Name That Tile | ✓ | ✓ | Rapid-fire tile identification across suits, winds, dragons, and flowers |
| Crack Numerals (一 to 九) | ✓ | ✓ | Structured character discrimination drills and spaced repetition for Chinese numerals |
| Track 2: Read the Card (Card Anatomy & Rules) | |||
| Card Anatomy & Grammar | ✓ | ✓ | Deconstruct card lines, color suit mappings, and concealed vs. exposed rules |
| Joker Legality Drills | ✓ | ✓ | Master where jokers are allowed (never get called dead on pairs or singles) |
| Match the Hand | Basic Lines | ✓ | Given a card line, identify matching hands vs clever near-miss distractors |
| Spot the Error (Dead Hand) | 3 / day | Unlimited | Catch illegal combinations, wrong suit distributions, and dead hands |
| Track 3: Pick a Hand & Best Discard | |||
| 13-Tile Best Fit Ranking | 3 / day | Unlimited | Evaluate dealt tiles against card lines; rank candidate hands by fit score |
| Tiles Away Breakdown | ✓ | ✓ | Tile-by-tile analysis showing exactly what you need next to declare Mahjong |
| Best Discard Drills | ✗ | ✓ | Learn to discard with confidence by evaluating fit deltas and wall probabilities |
| Track 4: Charleston Simulator | |||
| Full Charleston Simulation | 1 round / day | Unlimited | First Charleston, optional Second Charleston, and Courtesy Pass |
| Simulated AI Opponents | Soundcheck | All 3 Levels | Soundcheck (Casual), Opening Act (Smooth table pace), and Headliner (Strategic) |
| Pass-by-Pass Timeline Review | ✗ | ✓ | Review hand fit percentage before and after every single pass |
| Optimal Pass Recommendations | ✗ | ✓ | Compare your choices against the engine's highest-probability passes |
| Platform, Account & Experience | |||
| Cross-device sync | ✓ | ✓ | Sync progress seamlessly across iPhone, iPad, and Web via Google Sign-In |
| Zero Ads & Quiet Audio | ✓ | ✓ | No pop-up video ads, intrusive banners, or loud table noises |
| Annual Card Updates | Current Year | Included | Structured card data updated annually upon official card release |
| Subscription | Free | $3.99/mo $19.99/yr |
In-app purchase with 7-day free trial on annual plan |
Rack Star replaces the frustration of confusing table rules with bite-sized, deliberate practice. Whether you are learning to read crack tiles in seconds or looking to eliminate mistakes during the Charleston, Rack Star trains your muscle memory so you can enjoy the banter and own the table with confidence.