# Pulsar Tuner: Classical Guitar — Strobe, Beat Tuning, Metronome

> Strobe, Beat Tuning, Metronome (iPhone/iPad app by Akihiro Yamamoto.)

- Source: https://appshunter.io/ios/app/pulsar-tuner-classical-guitar/id6807597093 (this page in markdown: same URL + `.md`)
- Developer: [Akihiro Yamamoto](https://appshunter.io/developer/6798475292)
- Category: Music, Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 15.0 · 28 MB
- Languages: American English
- Released: 2026-09-09
- Data updated: 2026-09-11
- User reviews in markdown: https://appshunter.io/ios/app/pulsar-tuner-classical-guitar/id6807597093/reviews.md

## What is Pulsar Tuner?

In Spanish, the verb “pulsar” means to pluck or strum the strings of an instrument. In astronomy, a “pulsar” is a celestial body emitting pulses with extreme precision. Pulsar brings that exact precision, clarity, and resonance to every note a classical guitarist plays.

Pulsar is an ultra-precise strobe tuner, acoustic metronome, and string quality diagnostic tool engineered specifically for the acoustics and physical response of the classical guitar.

It eliminates common guitar challenges—such as the muddy 3rd-string beating and sharp intonation on low-fret barre chords—while offering acoustic BPM tempo detection and objective string quality testing.

1. Ultra-Precise Strobe & Needle Meter
• ±0.1 Cent Precision: Real-time phase and pitch tracking via proprietary core acoustic DSP.
• True Strobe Display: Clockwise rotation indicates sharp, counter-clockwise flat, and static halt means perfect unison.
• Pitch Ribbon: Real-time graph visualizing attack decay, pitch drift, and vibrato.
• Precision Auto-Zoom: The meter automatically magnifies as you approach the target pitch for effortless micro-adjustments.

2. Three Temperament Modes for Classical Guitar
• 12-ET (Standard): Universal equal temperament (0.0 cent offset) for modern repertoire and ensemble playing.
• Key-Optimized Mode: Pure temperament offsets for common keys (E, A, D, G Major, etc.) to eliminate 3rd-string beating and maximize resonance.
• Chord-Optimized Mode: Reverses the +2 to +4 cent pitch rise caused by low-fret finger pressure, factoring in scale length and string type (Nylon, Carbon, Gut).

3. Dyad Beat Tuning
• Real-time physical beat analysis: Pluck two strings together to measure beat frequency (Hz), cycle duration, and modulation depth.
• Presets for 4ths, 3rds, octaves, and 5F/7F harmonics to tune pure, beatless intervals with visual and auditory guidance.

4. Intelligent Auto-Lock
• Automatically locks onto stable pitch after initial pick attack turbulence settles.
• Customizable focus phase (Sustain/Attack/Average), sample speed, and cent tolerance.

5. Repertoire Tuning Presets
• Classical presets: Drop D, Drop D + G, Double Drop D, Lute tuning (3rd string F#), DADGAD, plus custom tuning slots.

6. High-Precision Acoustic Metronome
• Low-latency playback engine with a mechanical pendulum visualizer.
• Acoustic Tempo Detection: Analyzes instrument playing via microphone to compute BPM instantly.
• Tap tempo, standard time signatures (2/4, 3/4, 4/4, 6/8), and subdivisions (triplets, 16ths).

7. String Quality Diagnostics (String QA)
• 100% Objective Physical Data:
- Fundamental Frequency (Hz).
- Sustain Envelope: 2-second decay waveform showing amplitude consistency.
- False Beat Measurement: Detects string unroundness and gauge flaws (Hz, period, amplitude fluctuation %).
- 12th-Fret Octave Intonation: Quantifies cent deviation between harmonic and fretted notes.
• Seamless link to companion app ReString Logger for history tracking.

8. Professional Controls
• A4 Calibration: 415 Hz to 466 Hz.
• Mic Sensitivity: Adjustable gain (1.0x to 5.5x).
• Treble string material presets (Nylon / Carbon / Gut).
• Screen Wakelock to prevent sleep during practice.


## Version history (last 3 releases)

### 3.0.104 — 2026-09-11

• Refined Strobe Tuner: Introduced phase accumulation and inertia damping for ultra-smooth rotation and rock-solid stopping at target pitch.
• Auto-Snap & Hands-Free Wizard: Automatically locks precision snap tuning when you pause peg adjustment. Tuning wizard advances hands-free.
• String Health & Stiffness Trend: Automatically tracks acoustic tuning snaps to visualize daily string degradation and stiffness shifts.

### 1.3.22 — 2026-09-10

• Tuning Wizard introduced: Autopilot tuning with seamless transition from real-time coarse tuning to precision snap measurement, auto-advance to next string, custom tuning support, 3 precision levels, and step rewind.
• Perceptual Snap Tuning implemented: Discards initial pitch glide during attack and calculates true pitch using inharmonicity regression and auditory modeling, ensuring rock-solid accuracy even on low strings.

### 1.1.14 — 2026-09-09

No release notes.

## More apps by Akihiro Yamamoto

- [ReString - Guitar Tuner & Care](https://appshunter.io/ios/app/restring-guitar-tuner-and-care/id6798475290)

All apps by Akihiro Yamamoto: https://appshunter.io/developer/6798475292

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-11.*