# Piano Tuner's Assistant — Acoustic Piano Tuning Tool

> Acoustic Piano Tuning Tool (iPhone/iPad app by Shenzhen Fu Kang Heng Development Co., Ltd..)

- Source: https://appshunter.io/ios/app/piano-tuners-assistant/id6798656582 (this page in markdown: same URL + `.md`)
- Developer: [Shenzhen Fu Kang Heng Development Co., Ltd.](https://appshunter.io/developer/1863837413)
- Category: Productivity
- Price: $0.99
- Age rating: 4+
- Requires: iOS 18.6 · 2 MB
- Languages: Canadian English, Arabic, Catalan, Croatian, Czech, Danish, Dutch, Finnish, French (France), German (Germany) and 23 more
- Released: 2026-09-03
- Data updated: 2026-09-08
- User reviews in markdown: https://appshunter.io/ios/app/piano-tuners-assistant/id6798656582/reviews.md

## What is Piano Tuner's Assistant?

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.


## Version history (last 1 release)

### 1.0 — 2026-09-04

No release notes.

## More apps by Shenzhen Fu Kang Heng Development Co., Ltd.

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All apps by Shenzhen Fu Kang Heng Development Co., Ltd.: https://appshunter.io/developer/1863837413

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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 2026-09-08.*