True Diamond

True Diamond is an offline-first guitar and bass setup mathematics workshop for players, techs-in-training, school music programs, and small-shop mentors who need live fretboard, tension, and action decisions—not a static chart photo or thin tip sheet.

Core engines update instantly as you dial the instrument:
• Live scale-length fret-position math (12-TET) with partial-capo and harmonic marker overlays for electric, acoustic, classical, baritone, and bass scales
• String tension desk: combine gauge, scale length, and tuning—including drop and alternate tunings—to estimate unit tension per string and total neck load with safe-zone cues
• Action and neck-relief studio with feeler-gauge target windows by string and style (low/medium/high presets) plus seasonal humidity scenario cards
• Nut width and string-spacing geometry planner with E-to-E spread, centerline offsets, and slot-depth coaching ranges
• Intonation saddle compensation estimator from scale length, string type, and action height with per-string offset readouts
• Pickup height balance helper for magnetic pickups with bass/treble pole recommendations and string-to-pole clearance cues

Dense on first launch:
• 40+ factory-typical seed instruments (Strat/Tele/LP-class electrics, dreadnought/OM acoustics, classical, short- and long-scale basses, baritone) ready immediately—no empty Workshop tabs
• Guided setup sequence coach: ordered multi-step flows (relief → nut → action → intonation → pickup height) with target windows and completion checkmarks
• Project bench to save named setups, compare before/after cards, and export summaries via the system share sheet
• All data stored locally; units in mm or inch; Glossary, Privacy Policy, and Terms in-app