Comprehensive acoustic suite for classical guitarists: string lifespan tracking, timbre physics, ±0.1-cent strobe tuner, smart metronome, and practice analyzer.
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
Ratings & Reviews
This app hasn’t received enough ratings or reviews to display an overview.
• Fixed an issue where strings could not be exchanged from stock to guitars without registered strings
• Improved tuner high-precision resonance suppression
• Fixed an issue where tuning strings 1 and 3 was difficult in modes other than chromatic mode
• Fixed an issue where the pitch graph was displayed incorrectly in Auto-Snap and chromatic mode
• Improved tuner stability
• Bug fixes and performance improvements
Version 3.8.145
The developer, Akihiro Yamamoto, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
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The following data may be used to track you across apps and websites owned by other companies:
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Data Linked to You
The following data may be collected and linked to your identity:
Contact Info
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Data Not Linked to You
The following data may be collected but it is not linked to your identity:
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Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Seller
Akihiro Yamamoto
Size
66.5 MB
Category
Music
Compatibility
Requires iOS 15.0 or later.
iPhone Requires iOS 15.0 or later.
iPad Requires iPadOS 15.0 or later.
iPod touch Requires iOS 15.0 or later.
Mac Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
