Comparison

Audio Function Generator vs ToneGen Audio Tone Generator

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Audio Function Generator

Generate various audio test tones, including sine, square, triangle, and sawtooth waves. Explore frequency and volume sweeps, noise generation, and custom preset creation. Advanced features like extended frequency ranges and multi-tone playback are available with an upgrade.

Highlights
  • Generate sine, square, triangle, and sawtooth tones
  • Frequency and volume sweep generation
  • Noise generation (white, pink, violet, etc.)
  • Custom preset creation and saving
  • Extended frequency range (PRO feature)
  • Multi-tone playback (PRO feature)
Features
Read full description

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

About

ToneGen Audio Tone Generator

This utility generates various audio waveforms including sine, square, and noise. It supports a wide frequency range and can produce multiple tones simultaneously, with options to play or save them as WAV files.

Highlights
  • Sine, square, triangular, sawtooth, and impulse waveforms
  • White and pink noise generation
  • Frequency range 1Hz to 22kHz
  • Up to 16 simultaneous tones
  • Mono or stereo operation
  • Log or linear sweep generation
  • Save tones as WAV files
Features
Read full description

ToneGen Free Audio Tone Generator ToneGen is an easy-to-use program that can be used as a sine wave generator, sound frequency generator or signal generator that can create audio test tones, sweeps or noise waveforms. ToneGen Features: • Generate sine wave, square wave, triangular waveform, saw tooth waveform and impulse sound waves • White noise generator or pink noise generator • Sound generator supports frequencies from 1Hz to 22kHz • Simultaneous tone generation of up to 16 tones at once • Mono or separate stereo operation for dual tones or beats • Log or linear sweep tone generation • Play generated tones or save tones as a wav file • Send tone files using Email and FTP ToneGen Applications: • Generate test tones for radio audio level alignment • Calibration and testing of sound equipment or speakers • Demonstration of audio principles to students • Create harmonics by generating multiple sound frequencies • Acoustics testing and equalization • White noise generator • Audio band signaling • Hearing Tests (under medical supervision).

Screenshots

Audio Function Generator4 screens
ToneGen Audio Tone Generator3 screens

Verdict

The call

The clearest difference is rating: Audio Function Generator at 4.7 against ToneGen Audio Tone Generator's 3.8. Audio Function Generator also leads on review sentiment (77% vs 37%) and ratings volume (2.2K vs 38). ToneGen Audio Tone Generator's advantage is iOS requirement (9.0 vs 15.5). On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Audio Function Generator sells 1 one-off in-app purchase and ToneGen Audio Tone Generator sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Audio Function Generator holds the better App Store score, 4.7 against 3.8. That said, the two scores are not equally well evidenced: Audio Function Generator has 2.2K ratings behind it against 38, so its average is the more settled of the two. Written reviews point the same way: 77% of Audio Function Generator's written reviews are positive against 37% of ToneGen Audio Tone Generator's.

UpkeepUpdate frequency

Audio Function Generator ships an update every 6 weeks, ToneGen Audio Tone Generator every 2 months. The most recent releases landed on October 13, 2026 and October 3, 2026 respectively.

Scorecard4 real differences · 6 level
Audio Function Generator versus ToneGen Audio Tone Generator: the parameters behind the verdict, then further details
ParameterAudio Function GeneratorToneGen Audio Tone Generator
PriceFreeFree
Rating4.7 (2.2K ratings) — better3.8 (38 ratings)
Positive reviews77.1% of reviews — better36.8% of reviews
Number of ratings2.2K — better38
Update frequencyEvery 6 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.59.0 — better
Further details — not scored
Size14 MB11 MB
Age rating4+4+
DeveloperThomas GruberNCH Software

Customer experience

Audio Function Generator

All ratings2,191 ratings
Positive91.8%
Neutral3.1%
Negative5.1%
Written reviews271 reviews
Positive77.1%
Neutral6.3%
Negative16.6%

ToneGen Audio Tone Generator

All ratings38 ratings
Positive71.1%
Neutral0.0%
Negative28.9%
Written reviews19 reviews
Positive36.8%
Neutral0.0%
Negative63.2%

Bugs and requests

Audio Function Generator

Reported bugs

4 issues
  • Crashes on launch
  • Volume slider issues
  • Airplay not working
  • Sound distortion when display is active

Requested features

6 requests
  • Add download/save feature for custom sounds
  • Improve sweep function (continuous mode, better frequency control)
  • Add more multi-frequency rows
  • Implement 432Hz base frequency option
  • Add phase control for noise generators
Show 1 more
  • Improve accessibility (VoiceOver support)

ToneGen Audio Tone Generator

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Audio Function Generator

One-time1
  • Upgrade to PRO$9.99
1 purchases

ToneGen Audio Tone Generator

One-time1
  • ToneGen All Current Features$4.99

Questions

Is Audio Function Generator free?
Audio Function Generator is free to download, with in-app purchases available.
Is ToneGen Audio Tone Generator free?
ToneGen Audio Tone Generator is free to download, with in-app purchases available.
Which has better reviews, Audio Function Generator or ToneGen Audio Tone Generator?
Audio Function Generator is rated higher. Audio Function Generator averages 4.7 out of 5 from 2.2K ratings, while ToneGen Audio Tone Generator averages 3.8 from 38 ratings.
Do Audio Function Generator or ToneGen Audio Tone Generator have ads?
Neither Audio Function Generator nor ToneGen Audio Tone Generator shows ads.
Which is updated more often, Audio Function Generator or ToneGen Audio Tone Generator?
Audio Function Generator ships an update every 6 weeks, and ToneGen Audio Tone Generator every 2 months. Most recently, Audio Function Generator was updated on October 13, 2026 and ToneGen Audio Tone Generator on October 3, 2026.

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