AudioScope Music Lab
Real-time spectrum
FFT spectrum with dominant frequency, peak hold, cursor readout, zoom and linear or logarithmic scale.
Analyze. Tune. Compare.
All on your phone.
AudioScope Music Lab is an Android toolkit for sound analysis and music practice. It works completely offline: no account, no servers and no internet permission.
Coming soon to Google Play
See what it does
- 100% offline
- No account
- No ads or tracking
- English and Spanish
- Dark and light themes
Twelve tools in one app
From checking whether a machine sounds different today to tuning a bass or measuring how long a note rings.
Spectrogram
Scrolling waterfall view with selectable color palettes. Pause it, read any point and save it as an image.
Levels and octave bands
RMS and peak in dBFS, clipping indicator and ten octave bands from 31.5 Hz to 16 kHz.
References
Save any measurement as a reference: a fan when new, an empty room, a guitar with fresh strings.
Side-by-side comparison
Overlaid spectra, level change per band, frequencies that appeared or disappeared, and warnings when two measurements are not comparable.
Export
Uncompressed WAV audio, CSV and JSON data, and images of your charts, shared only where you choose.
Chromatic tuner
Note, octave and cents with presets for guitar, bass, ukulele, violin, viola and cello, plus your own tunings. A4 reference is adjustable.
Tuning monitor
Hold a note and see how well it stays in tune: average and maximum deviation and time within tolerance.
Harmonics and sustain
Level and tuning of the first twelve harmonics, and how long a note rings with its 20 dB and 40 dB decay times.
Tone generator
Sine, square and triangle waves, white and pink noise, and frequency sweeps. Always starts at low volume.
Metronome
Sample-accurate clicks with tap tempo, subdivisions, accents, progressive tempo increase and presets.
Practice recorder
Record takes, loop a section, add markers and notes, and compare two performances.
Private by design
The app does not request internet access, so Android itself prevents it from sending anything anywhere.
- All audio is processed on your phone.
- The only permission it asks for is the microphone, and it is used only after you press a button.
- No account, no ads, no analytics.
- You decide what to keep, and you can delete any recording from the app.
About accuracy
Measurements made with the phone's microphone are approximate. Response, gain and processing vary by device. This app does not replace a certified sound level meter.
Levels are shown in dBFS, the digital level relative to the maximum the phone can record. An estimated dB SPL value appears only if you calibrate against a reference meter. What the app does best is compare: two measurements taken with the same phone, in the same place, with the same settings.
Questions or feedback
Write to feedback@fab-apps.com.