Comparison

Audio Function Generator vs Tone Gen Pro

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

Tone Gen Pro

Create various audio signals, including single tones, sweeps, and merged sounds, with extensive parameter control. Ideal for students, musicians, educators, and audio professionals exploring sound.

Highlights
  • Generate single type signals (sine, square, noise)
  • Create sweep (chirp) signals (linear/exponential)
  • Generate click signals with adjustable duty cycle
  • Merge multiple tones and sweeps
  • Frequencies up to 20 kHz
  • Extensive parameter control
Features
Read full description

Generate audio signal of different shapes with many parameters and options. You can generate frequencies up to 20 kHz of audio signal. If you are curious student about sound after a physics class, music instruments hobbyist/professional, a teacher, or a professional in audio equipment, this app is for you ! You can generate: - Single type signal (sinusoidal, square, noise, etc) - Sweep (chirp) signal (linear or exponential) - Click: ON-OFF sine wave with any duty cycle and ON frequency - Merged sound of any number of tones or sweeps

Screenshots

Audio Function Generator4 screens
Tone Gen Pro4 screens

Verdict

The call

The clearest difference is ratings volume: Audio Function Generator at 2.2K against Tone Gen Pro's 45. Audio Function Generator also leads on rating (4.7 vs 4.5) and update cadence (every 6 weeks vs every 3 months). Tone Gen Pro's advantage is iOS requirement (12.0 vs 15.5). On price, review sentiment, 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 Tone Gen Pro 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 4.5. That said, the two scores are not equally well evidenced: Audio Function Generator has 2.2K ratings behind it against 45, 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 75% of Tone Gen Pro's.

UpkeepUpdate frequency

Audio Function Generator ships an update every 6 weeks, Tone Gen Pro every 3 months. The most recent releases landed on September 24, 2026 and July 6, 2026 respectively.

Scorecard4 real differences · 6 level
Audio Function Generator versus Tone Gen Pro: the parameters behind the verdict, then further details
ParameterAudio Function GeneratorTone Gen Pro
PriceFreeFree
Rating4.7 (2.2K ratings) — better4.5 (45 ratings)
Positive reviews77.1% of reviews — better75.0% of reviews
Number of ratings2.2K — better45
Update frequencyEvery 6 weeks — betterEvery 3 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.512.0 — better
Further details — not scored
Size14 MB44 MB
Age rating4+12+
DeveloperThomas GruberIbrahim Al-Sammarraie

Customer experience

Audio Function Generator

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

Tone Gen Pro

All ratings45 ratings
Positive84.4%
Neutral6.7%
Negative8.9%
Written reviews4 reviews
Positive75.0%
Neutral0.0%
Negative25.0%

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)

Tone Gen Pro

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

Tone Gen Pro

One-time1
  • Tone Gen Pro Full$1.99

Questions

Is Audio Function Generator free?
Audio Function Generator is free to download, with in-app purchases available.
Is Tone Gen Pro free?
Tone Gen Pro is free to download, with in-app purchases available.
Which has better reviews, Audio Function Generator or Tone Gen Pro?
Audio Function Generator is rated higher. Audio Function Generator averages 4.7 out of 5 from 2.2K ratings, while Tone Gen Pro averages 4.5 from 45 ratings.
Do Audio Function Generator or Tone Gen Pro have ads?
Neither Audio Function Generator nor Tone Gen Pro shows ads.
Which is updated more often, Audio Function Generator or Tone Gen Pro?
Audio Function Generator ships an update every 6 weeks, and Tone Gen Pro every 3 months. Most recently, Audio Function Generator was updated on September 24, 2026 and Tone Gen Pro on July 6, 2026.

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