Quick summary

Audio Function Generator PRO is a full-featured tone generator app for iPhone, created by Thomas Gruber. It combines a straightforward interface with extensive signal-generation options, making it useful for audio testing, musical experimentation, and sound design.

What it does best

  • Generate pure tones, music-based tones, and controlled volume sweeps
  • Produce frequency-sweep signals for testing and measurement
  • Offer fine-grain tuning controls and a wide set of built-in presets
  • Let you build and recall your own custom preset configurations

Noise types supported

  • Blue noise
  • Brown noise
  • Grey noise
  • Violet noise
  • Pink noise
  • White noise

Advanced signal controls

  • Adjustable frequency span and sweep duration
  • Individual left/right channel routing and selection
  • Changeable signal amplitude and sweep-repeat/wobble modes
  • Choice of linear or logarithmic frequency slider behavior

Additional features

  • Dual function generator and multitone output modes
  • BPM (Beats Per Minute) timing option and phase-out control
  • Unlimited storage for user presets with permanent save capability
  • Light and dark background themes for the interface

Interface and usability

The app keeps controls accessible and easy to understand while exposing many professional options under the hood. Preset management and direct playback make repetitive testing quick, and the layout encourages experimentation without steep learning curves.

Availability and recommendation

Audio Function Generator PRO is available as a full version on iPhone and comes highly recommended for anyone needing a robust, user-friendly tone generator.

Alternative suggestion

eSound - MP3 Music Player Free is suggested as a top alternative if you want a music-focused player with simple tone playback features.

Technical

Title
Audio Function Generator PRO
Requirements
  • iPhone
Language
English
Available languages
  • German
  • English
License
  • Full
Latest update
2026-01-23
Author
Thomas Gruber
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