Piano Tuner's Assistant
Acoustic Piano Tuning Tool
$0.99 · Designed for iPad. Not verified for macOS.
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.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Shenzhen Fu Kang Heng Development Co., Ltd., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Shenzhen Fu Kang Heng Development Co., Ltd.
- Size
- 2.4 MB
- Category
- Productivity
- Compatibility
Requires iOS 18.6 or later.
- iPhone
Requires iOS 18.6 or later. - iPad
Requires iPadOS 18.6 or later. - Mac
Requires macOS 15.6 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.6 or later.
- iPhone
- Languages
English and 32 more
- English, Arabic, Catalan, Croatian, Czech, Danish, Dutch, Finnish, French, German, Greek, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Korean, Malay, Norwegian Bokmål, Polish, Portuguese, Romanian, Russian, Simplified Chinese, Slovak, Spanish, Swedish, Thai, Traditional Chinese, Turkish, Ukrainian, Vietnamese
- Age Rating
4+
- 4+
- Copyright
- © 2026 Fugui Cao
