ToneLab: Tone Generator
Tools In-app purchases Contains ads
Generate test tones and analyze sound frequency with your mic.
- Downloads
- 9+
- on Google Play
- Price
- Free
- In-app purchases
- Updated
- Oct 20
- 2026 · v1.0.0
Screenshots
About ToneLab: Tone Generator
ToneLab plays a clean test tone from your phone speaker and reads the dominant frequency of nearby sound with the built-in microphone.
Generator
• Sine, square, triangle, and sawtooth from 20 Hz to 20 kHz
• Logarithmic frequency slider plus A4, C5, 100 Hz, 1 kHz, and 10 kHz presets
• Volume control that stays continuous while the tone is playing
Analyzer
• Live spectrum plot from the microphone
• Dominant-frequency readout with peak hold
• Resolution shown so you know how fine the peak bin can be
Use it to check a pitch against concert A, send a 1 kHz tone into speakers or headphones, or point the analyzer at a tone and read the strongest bin. Audio stays on the device and stops when you leave the screen.
Generator
• Sine, square, triangle, and sawtooth from 20 Hz to 20 kHz
• Logarithmic frequency slider plus A4, C5, 100 Hz, 1 kHz, and 10 kHz presets
• Volume control that stays continuous while the tone is playing
Analyzer
• Live spectrum plot from the microphone
• Dominant-frequency readout with peak hold
• Resolution shown so you know how fine the peak bin can be
Use it to check a pitch against concert A, send a 1 kHz tone into speakers or headphones, or point the analyzer at a tone and read the strongest bin. Audio stays on the device and stops when you leave the screen.
What’s new
Version 1.0.0 · Updated October 20, 2026
Performance improvements and bug fixes
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| App | Rating | Price | Installs | Last updated | Compare |
|---|---|---|---|---|---|
| ToneLab: Tone Generator | – | Free | 5+ | Oct 20, 2026 | |
| Running Pace Calculator | – | Free | 10+ | Sep 15, 2026 | Compare |
| Home Affordability Calculator | – | Free | 5+ | Oct 20, 2026 | Compare |
| SatTrack: Satellite Passes | – | Free | 1+ | Sep 15, 2026 | Compare |
| Braille Translator: UEB | – | Free | 10+ | Sep 15, 2026 | Compare |
| NATO Phonetic Alphabet | – | Free | 0+ | – | Compare |
| RandomKit: Dice & Coin Flip | – | Free | 0+ | – | Compare |