Comparison

Audio Function Generator vs Frequency 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

Frequency Generator

This utility app provides a simple and straightforward tuning fork. It allows users to generate any frequency between 20 Hz and 20,000 Hz, limited only by the device's speaker and human hearing.

Highlights
  • Adjustable frequency range (20 Hz - 20,000 Hz)
  • Simple and easy to use interface
  • Generates audio tones
  • No complex settings
Features
Read full description

Frequency Generator - Tone and Sound Generate audio tones, explore sound frequencies, and find the right pitch with a simple, easy-to-use frequency generator. Whether you are tuning a musical instrument, checking a reference pitch, experimenting with audio frequencies, or exploring sound, this app gives you convenient control over the tone you hear. FREQUENCY GENERATOR Generate sound at an adjustable frequency and explore different pitches. Use the frequency slider or enter a value directly to find the tone you need. TONE GENERATOR WITH VOLUME CONTROL Adjust the sound volume to suit your needs. Fine-tune your listening experience while experimenting with different frequencies and pitches. TUNING FORK AND MUSICAL PITCH REFERENCE Use your phone as a digital tuning fork and pitch reference for musical practice. The standard reference tone of 440 Hz corresponds to A4, also known as concert A. This is a widely used reference for tuning musical instruments. Explore other frequencies to find the tones you need. EXPLORE AUDIO FREQUENCIES Discover how changing frequency affects the pitch of a sound. Move between lower and higher tones and experiment with different audio frequencies for music, sound exploration, and everyday listening. WHY USE FREQUENCY GENERATOR? - Adjustable sound frequency - Direct frequency input - Adjustable volume - Animated visual feedback while generating tones - Convenient audio pitch reference - Simple controls for quick access to sound settings WHO IS IT FOR? Musicians can use a reference tone while practising and tuning instruments. Music students can explore pitch and the relationship between frequency and musical notes. Audio enthusiasts can experiment with generated tones and different frequencies. Everyday users can quickly generate a tone at a frequency of their choice. SIMPLE AND EASY TO USE Open the app, select your frequency, adjust the volume, and generate your tone. Whether you need a tuning reference or a flexible frequency and sound generator, the essential controls are right at your fingertips. Download Frequency Generator and explore the world of sound, one frequency at a time.

Screenshots

Audio Function Generator4 screens
Frequency Generator4 screens

Verdict

The call

The clearest difference is rating: Audio Function Generator at 4.7 against Frequency Generator's 3.0. Audio Function Generator also leads on update cadence (every 6 weeks vs every 14 months) and ratings volume (2.2K vs 2). Frequency Generator's advantage is in-app purchases (none vs 1). On price, ads, device support and iOS requirement 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. Frequency Generator asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Audio Function Generator holds the better App Store score, 4.7 against 3.0. That said, the two scores are not equally well evidenced: Audio Function Generator has 2.2K ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

Audio Function Generator ships an update every 6 weeks, Frequency Generator every 14 months. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

Scorecard5 real differences · 5 level
Audio Function Generator versus Frequency Generator: the parameters behind the verdict, then further details
ParameterAudio Function GeneratorFrequency Generator
PriceFreeFree
Rating4.7 (2.2K ratings) — better3.0 (2 ratings)
Positive reviews77.2% of reviews—
Number of ratings2.2K — better2
Update frequencyEvery 6 weeks — betterEvery 14 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.015 — better
Further details — not scored
Size13 MB7 MB
Age rating4+4+
DeveloperThomas GruberKrzysztof Gwiazda

Customer experience

Audio Function Generator

All ratings2,211 ratings
Positive91.9%
Neutral3.1%
Negative5.0%
Written reviews272 reviews
Positive77.2%
Neutral6.3%
Negative16.5%

Frequency Generator

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%

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)

Frequency 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
None

Frequency Generator

No in-app purchases

Questions

Is Audio Function Generator free?
Audio Function Generator is free to download, with in-app purchases available.
Is Frequency Generator free?
Frequency Generator is free to download, with no in-app purchases.
Which has better reviews, Audio Function Generator or Frequency Generator?
Audio Function Generator is rated higher. Audio Function Generator averages 4.7 out of 5 from 2.2K ratings, while Frequency Generator averages 3.0 from 2 ratings.
Do Audio Function Generator or Frequency Generator have ads?
Neither Audio Function Generator nor Frequency Generator shows ads.
Which is updated more often, Audio Function Generator or Frequency Generator?
Audio Function Generator ships an update every 6 weeks, and Frequency Generator every 14 months. Most recently, Audio Function Generator was updated on October 23, 2026 and Frequency Generator on October 24, 2026.

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