Pitch Witch vs Spectrolite Usage & Stats
A free and open source voice analysis app specifically geared toward aiding speaking voice pitch and resonance training. The app is intended to be a useful tool for those who are already familiar with the concepts of pitch and resonance and how they affect the sound of speech.
Features
• Monitor the pitch of your voice live from your device's microphone.
• Switch between multiple pitch estimation algorithms (Yin or IRAPT).
• Enable formant estimation to analyze vocal resonance.
• Pinch to zoom and pan around the pitch chart for a closer look.
• Customize the visual guide lines to help stay within a certain pitch range.
• Save recordings for later inspection and playback.
• Play, analyze, export, share, rename, or delete saved recordings.
• No ads or collection of data whatsoever. Recordings never leave the device unless explicitly shared to another app.
- Apple App Store
- Free
- Utilities
Store Rank
- -
Spectrolite visualizes sound as spectrograms in real time.
Spectrolite supports constant-Q spectrograms, which use a logarithmic frequency scale for a display where musical notes are evenly spaced. Spectrograms based on linear and mel frequency scales are also supported.
The display covers the full frequency range of human hearing. Intuitive touch panning and zooming lets you dive in and explore the spectrograms in detail. Gain, Q, and other parameters can be adjusted in real time and instantly apply to the display of past signals as well as future ones.
The Pro in-app purchase adds grids and scales for time, frequency, and amplitude, as well as a spectrum view and a tap-to-measure function. This expands Spectrolite into an audio measurement tool that you can use to measure frequencies, musical pitches, amplitudes, and durations.
- Apple App Store
- Free
- Utilities
Store Rank
- -
Pitch Witch VS. 
SpectroliteJanuary 18, 2026