Guitar Tap
Tap‑tone analysis for luthiers
$14.99
Guitar Tap turns your device into a precision tap-tone analyzer for guitar
builders and tonewood enthusiasts. Tap a guitar body, a raw tonewood plate, or a
brace, and Guitar Tap captures the ring-out, runs a 65,536-point FFT (about
0.67 Hz resolution), and shows you the resonant peaks that reveal how the
structure and material behave.
Built around the tap-tone workflow used by luthiers following Trevor Gore's
methodology — but approachable enough for any builder curious about what their
wood is telling them.
THREE WAYS TO MEASURE
• Guitar mode — Identify the key structural resonances of a finished body: Air
(Helmholtz), Top, Back, Dipole, and Ring modes. Each peak is labeled with its
frequency, pitch, Q factor, and bandwidth. See the Tap Tone Ratio and ring-out
decay time at a glance.
• Plate mode — Measure a rectangular tonewood blank with free-free bending taps.
Guitar Tap derives Young's modulus along and across the grain, speed of sound,
specific modulus, radiation ratio, and a quality grade — plus a Gore target
thickness for your guitar's dimensions.
• Brace mode — A fast single-tap measurement of a brace strip's stiffness and
quality.
FEATURES
• Real-time spectrum that freezes automatically the instant a tap is detected
• Multi-tap averaging (2–10 taps) to cut noise, with per-tap comparison view
• Color-coded peak labels you can drag, toggle, and reclassify
• Compare 2–5 saved guitar measurements overlaid on one chart
• Save measurements with names and notes; export as files, spectrum images, or
PDF reports
• Import and share measurements via the Files app, AirDrop, and more
• Microphone calibration support for measurement mics
• Spruce quality scale, anisotropy ratio, and density checks built in
• Play an audio file through the analyzer instead of the live mic
PRIVACY
Everything runs on your device. Guitar Tap has no accounts, no ads, no tracking,
and never sends your audio or measurements anywhere.
Works on iPhone, iPad, and Mac.
This release rethinks how you measure plates and braces — tap first, then set
the exact dimensions right where you read your results — and makes your saved
measurements easy to back up and carry between devices.
• Set dimensions in the Results — enter a plate or brace's Sample and Body
Dimensions right where you read them; every property and the Gore target
thickness recompute as you type. Tap first, enter the exact numbers after.
• Export All / Import — back up every saved measurement to one file, or move
your measurements to another device.
• iPhone landscape — the Analysis Results now slide in over the spectrum,
so the chart keeps its full width.
• Clearer material tap names (Longitudinal fL, Cross-grain fC, Diagonal fLC),
two new Classical panel-stiffness presets, and plate/brace results that
fill in as you tap.
Plus a range of bug fixes and reliability improvements.
The developer, David Smith, 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
- David Smith
- Size
- 3.6 MB
- Category
- Music
- Compatibility
Requires iOS 17.6 or later.
- iPhone
Requires iOS 17.6 or later. - iPad
Requires iPadOS 17.6 or later. - Mac
Requires macOS 14.6 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Dolce Sfogato
