# Piano Tuner's Assistant

> Acoustic Piano Tuning Tool

Canonical page: [https://chrome-stats.com/d/id6798656582](https://chrome-stats.com/d/id6798656582)

## Overview

- **ID:** `id6798656582`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Shenzhen Fu Kang Heng Development Co., Ltd.
- **Category:** Productivity
- **Version:** 1.0
- **Last updated:** 2026-09-04
- **First published:** 2026-09-03
- **Size:** 2.25 MB
- **Data as of:** 2026-09-23
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/piano-tuners-assistant/id6798656582)
- **Website:** [https://www.fukangheng.com](https://www.fukangheng.com/)
- **Privacy policy:** [https://www.fukangheng.com/iOS/PianoTunerAssistant.html](https://www.fukangheng.com/iOS/PianoTunerAssistant.html)

## Description

Measure real-time pitch deviation per piano key in cents, plot full 88-key piano stability graphs, track tuning history offline, and synthesize A4 reference tones.

Piano Tuner's Assistant is a professional acoustic analysis utility crafted specifically for piano tuners, music students, piano technicians, and acoustic piano owners.

Key Features:
- Real-Time Pitch Analysis: Utilizes microphone audio FFT processing to measure fundamental pitch frequencies from A0 (27.5 Hz) to C8 (4186 Hz).
- Cents Deviation Gauge: Precision analog and digital pitch error meter displaying exact cents deviation (±50 cents) with flat/sharp direction cues.
- 88-Key Piano Map: Interactive 88-key keyboard view and comprehensive pitch deviation spectrum bar chart across the whole piano.
- Pitch Stability History: Name, save, and compare multi-session tuning records over time to monitor piano string pitch drift and acoustic stability.
- Reference Tone Generator: Built-in pure sine wave synthesizer producing standard reference pitch (A4 = 440 Hz, 442 Hz, 443 Hz, 438 Hz, 415 Hz).
- 100% Offline & Private: All audio processing runs locally on device with zero data collection or internet required.

## Rankings

- #1,844,159 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6798656582)