ReString - Guitar Tuner & Care

The ultimate string management and acoustic intelligence platform designed for classical guitarists and luthiers.

Which strings truly unlock your guitar's voice? How many days have passed since your last change, and how has the tone evolved? Are your tremolo and scale articulations truly even?

ReString Logger combines string lifespan tracking and stock management with advanced audio DSP: physical timbre measurement, 0.1-cent strobe tuning, smart tempo-detecting metronome, scientific technique analysis, and hands-free loop recording.

Back your tone and technique with objective acoustic physics.

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KEY FEATURES
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1. ACTIVE STRINGS & LIFESPAN TRACKING
- Visual dashboard tracking elapsed days, estimated wear level, and tension for each instrument.
- Comprehensive string history logs to monitor tonal aging and replacement cycles.
- Performance countdown and concert reminders to keep your instrument recital-ready.

2. STRING STOCK & SPEC DATABASE
- Manage sets and single strings in stock. Prevent duplicate purchases and shortages.
- Built-in database covering major string brands (gauge, tension, materials) with instant side-by-side comparison.

3. TIMBRE ANALYZER & STRING QA
- Guided acoustic measurement from string 6 to 1.
- Objective metrics: Spectral Centroid (brightness), Sustain Decay (T30), 1st-8th harmonics, and odd/even ratios.
- Semi-transparent overlay comparison to inspect tonal aging or compare different string brands.
- String QA: Detect manufacturing defects (irregular core beats) and verify 12th-fret octave intonation.

4. 0.1-CENT PRECISION STROBE TUNER
- Real-time phase-accumulating strobe display running at 60-120 fps.
- Specialized classical guitar temperaments:
- 12-Tone Equal Temperament (12-ET).
- Key-Optimized Mode: Purifies primary triads and sweetens open strings.
- Chord-Optimized Mode: Offsets pitch rise from low-position fretting tension.
- Dyad Beat Tuning: Real-time visualization of acoustic beat frequencies between two strings.
- Auto-Snap: Locks the true settled pitch once pluck attack transients stabilize.

5. SMART METRONOME & TEMPO DETECTION
- Look-ahead audio buffer scheduling for zero-jitter, sample-accurate playback.
- Physics-modeled pendulum visualizer with minimal battery consumption.
- Acoustic Tempo Detection: Listens to your playing via microphone and calculates BPM instantly.
- Woodblock, click, and beep sounds with customizable meters and subdivisions.

6. SCIENTIFIC TECHNIQUE ANALYZER (IQ DEMODULATION)
- Objective physical measurements (ms, dB, spectral centroid) without gamified scoring.
- Tremolo (p-a-m-i): Strike intervals, jitter, Evenness %, and per-finger loudness ratios.
- Scale Alternation (i-m, m-a, i-a): 50:50 timing ratio, volume balance, and finger timbre consistency.
- Arpeggio separation and harmonics quality analysis.

7. HANDS-FREE LOOP RECORDER
- Record and audition practice takes without taking your hands off the guitar.
- Armed Mode: Automatically starts recording on your first plucked note.
- Automatic silence detection stops recording and immediately loops playback for instant feedback.
- High-fidelity WAV recording with export and share options.

8. GUITARIST COMMUNITY
- Public String Logs: Explore string combinations and reviews from fellow guitarists.
- Public Guitars: Browse specs, photos, and verified timbre profiles of fine instruments worldwide.

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RECOMMENDED FOR
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- Players seeking the perfect string tension and sound for their guitar
- Guitarists who want objective data on string decay rather than guessing
- Musicians refining tremolo, arpeggios, and scale articulation
- Performers preparing for concerts, competitions, and recording sessions
- Anyone wanting seamless hands-free loop recording during daily practice