FormantScope
Utilities
Free · Designed for iPad. Not verified for macOS.
FormantScope analyzes your voice in real time on device: it shows fundamental frequency (F0), the first and second formants (F1 and F2), and input level, with short history charts for practice and coaching.
• Live numeric readouts for F0, F1, F2, and level
• Dual-series charts with independent scales
• Stability and gating to reduce flicker during continuous phonation
• Optional WAV export to a folder you choose
• iPhone, iPad, and Mac; microphone is used only for local analysis
• No account required; open-source project (see support link)
FormantScope does not send your microphone audio to the developer for processing. Optional recordings are saved only where you select on your device.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
English (What's New in This Version)
This update refines the live chart and rounds out the interface:
• Friendlier chart axes — ticks now use clean, evenly spaced values and always include the range
endpoints.
• New time axis along the bottom, with an adjustable time window (2–20 seconds).
• Each F0 / F1 / F2 readout now shows a running average for the current window.
• Various polish and stability improvements.
The developer, 跃然 王, 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
- 跃然 王
- Size
- 3.9 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English and Simplified Chinese
- Age Rating
4+
- 4+
- Copyright
- © 2026 Yueran Wang