Audio Function Generator Downloads & RevenueAudio Function Generator · App Store
Not in any tracked top chart right now.
Updated 8 Nov 2026 · rankings refresh through the day
DeveloperThomas Gruber
CategoryUtilities
PriceFree
Released
Rating★ 4.7 (2.2k)
Version9.4.0
Age rating4+
First seen by us
23 Oct 2026
23 Oct 2026Audio Function Generator update history & changes
Last change · 3 events since 9 Dec 2013Full timeline ↓Full timeline · 3 events
- 🆕Audio Function Generator first spotted by AppInsiderUnited States (found via developer)
- 📦Audio Function Generator version 9.4.0• support for iPhone Duo
• added a Scale Trainer feature (Musical Notes popover), which plays a series of notes in a loop. You pick a key and scale or enter your own notes, and set the octave, tempo (BPM), beats per note, a pattern and repeat.
• added support for the Playback Start Timer and Playback Stop Timer to the MultiTone main view
• Extended Sweep View optimisations for smaller screens (Volume, Frequency+Volume)… more - 🆕Audio Function Generator released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
4.7 ★
2.2k ratings
Measured
Audio Function Generator on the App Store
App details
App ID
768229610
Publisher
Thomas Gruber
On the store since
Dec 2013
12 years on the store
Minimum OS
iOS 16.0+
iPhone 8 and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
8
EN FR DE JA KO PT ZH ES
Size
14 MB
Also listed in
Music
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Not charting right now. | ||
Ratings
App Store, worldwide.
Rating
4.7 ★
2.2k ratings
Measured
Ratings
2.2k
Measured
About Audio Function Generator
This is the highly recommended and praised Function Generator App - an amazingly great and powerful tone generator. Enriched with a vast amount of features yet it is extremely intuitive and designed for simplicity.
Get to know this great App now! It is very well maintained and has received considerable upgrades over the past years.
So, … what can you do with this App?
• PLAY TEST TONES Sine, Rectangular, Triangular and Sawtooth.
• PLAY FREQUENCY SWEEP TEST TONES in both directions (minimum to maximum frequency and maximum to minimum frequency).
• PLAY VOLUME SWEEPS (from minimum to maximum volume).
• Try the SWEEP REPEAT / WOBBLE function.
• Try the MUSIC TONES PLAYBACK.
• Experiment with the huge FINE TUNE SELECTON, PRESETS SELECTION!
• Or create your own CUSTOM PRESETS!
• And SAVE an endless amount of CONFIGURATIONS (Frequency, Sweep, Noise) for later quick access and direct playback function.
• Even play back different kinds of NOISE – White, Pink, Violet, Grey, Brown, Blue is also supported.
The Function Generator is AMAZINGLY INTUITIVE and SIMPLE to use!
AND THESE ARE THE ADVANCED SETTINGS/FEATURES (upgrade to PRO required):
=> Extending The Frequency Range (1Hz - 21kHz)
=> Extending The Sweep Times (0.1s - 600s)
=> Changing Min/Max Slider Frequency Ranges
=> Changing Max Sweep Time Slider Range
=> Changing Signal Amplitude
=> Enabling Of The Sweep Repeat / Wobble Function
=> Frequency Slider Setting to Linear or Logarithmic
=> Left/Right Channel Individual Selection
=> Permanently Saving Custom Presets
=> Saving Of Endless Number Of Audio Configurations
=> Phase Out Setting (custom phase shift of the generated signal)
=> BPM (Beats per Minute) Feature
=> Dual Function Generator
=> MultiTone Generator (playback of up to eight individual tones)
=> Background Theme Selection (Light/Dark)
Check out the tutorial page: www.ee-toolkit.com/audio-function-generator
Get to know this great App now! It is very well maintained and has received considerable upgrades over the past years.
So, … what can you do with this App?
• PLAY TEST TONES Sine, Rectangular, Triangular and Sawtooth.
• PLAY FREQUENCY SWEEP TEST TONES in both directions (minimum to maximum frequency and maximum to minimum frequency).
• PLAY VOLUME SWEEPS (from minimum to maximum volume).
• Try the SWEEP REPEAT / WOBBLE function.
• Try the MUSIC TONES PLAYBACK.
• Experiment with the huge FINE TUNE SELECTON, PRESETS SELECTION!
• Or create your own CUSTOM PRESETS!
• And SAVE an endless amount of CONFIGURATIONS (Frequency, Sweep, Noise) for later quick access and direct playback function.
• Even play back different kinds of NOISE – White, Pink, Violet, Grey, Brown, Blue is also supported.
The Function Generator is AMAZINGLY INTUITIVE and SIMPLE to use!
AND THESE ARE THE ADVANCED SETTINGS/FEATURES (upgrade to PRO required):
=> Extending The Frequency Range (1Hz - 21kHz)
=> Extending The Sweep Times (0.1s - 600s)
=> Changing Min/Max Slider Frequency Ranges
=> Changing Max Sweep Time Slider Range
=> Changing Signal Amplitude
=> Enabling Of The Sweep Repeat / Wobble Function
=> Frequency Slider Setting to Linear or Logarithmic
=> Left/Right Channel Individual Selection
=> Permanently Saving Custom Presets
=> Saving Of Endless Number Of Audio Configurations
=> Phase Out Setting (custom phase shift of the generated signal)
=> BPM (Beats per Minute) Feature
=> Dual Function Generator
=> MultiTone Generator (playback of up to eight individual tones)
=> Background Theme Selection (Light/Dark)
Check out the tutorial page: www.ee-toolkit.com/audio-function-generator
Latest updates
9.4.0
• support for iPhone Duo
• added a Scale Trainer feature (Musical Notes popover), which plays a series of notes in a loop. You pick a key and scale or enter your own notes, and set the octave, tempo (BPM), beats per note, a pattern and repeat.
• added support for the Playback Start Timer and Playback Stop Timer to the MultiTone main view
• Extended Sweep View optimisations for smaller screens (Volume, Frequency+Volume)
