Comparison

Audio Function Generator vs TONE Telegenics

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 Telegenics

This application analyzes and visualizes audio frequencies in any environment. It displays detected sound waves in a detailed graph view, offering real-time clarity and precision for acoustic research, noise control, and audio production.

Highlights
  • Detect audio frequencies in any environment
  • Real-time graph visualization of sound data
  • Precise sound analysis feedback
  • Versatile indoor and outdoor use
  • Visualize audio data in real-time
Read full description

Looking for a way to detect frequencies around you? TONE Telegenics is a Frequency detector that reveals the audio frequencies of any environment and displays them in a detailed graph view. Frequencies are the rates at which sound waves vibrate per second, measured in Hertz (Hz). Detecting these frequencies is crucial in various applications, including acoustic research, noise control, and audio production. With TONE Telegenics’s mobile app, you can: REVEAL THE AUDIO FREQUENCIES OF ANY ENVIRONMENT: The app can be used both indoors and outdoors, to capture and analyze the sound profile. It doesn’t limit the user to specific conditions; rather, it adapts to wherever the user is, making it highly versatile. It can be used for tasks such as measuring room acoustics, identifying unwanted noises in residential and commercial areas. DISPLAY THE AUDIO FREQUENCIES IN A GRAPH VIEW: The frequencies detected are not just listed numerically but are also visually represented through graphs. These graphs typically displays frequencies horizontally and amplitude vertically, helping users visualize the intensity and distribution of frequencies. EXPERIENCE SOUND ANALYSIS WITH CLARITY AND PRECISION: This highlights the app's ability to provide clear and precise feedback on sound analysis. Clarity and precision are crucial for ensuring that the frequency data is accurate and useful. Precision in sound analysis is essential for tasks requiring exact frequency responses, conducting research on sound waves or calibrating audio equipment. VISUALIZE AUDIO DATA IN REAL-TIME: TONE Telegenics offers real-time visualization of audio data. This means that as soon as sound is detected, it is immediately detected and visually represented in the app. There is no significant delay between sound input and visual output. Real-time data visualization is critical during real-time noise monitoring, or any scenario where immediate feedback on sound quality and levels is necessary.

Screenshots

Audio Function Generator4 screens
TONE Telegenics3 screens

Verdict

The call

The clearest difference is in-app purchases: TONE Telegenics at none against Audio Function Generator's 1. TONE Telegenics also leads on rating (5.0 vs 4.7). Audio Function Generator's advantage is ratings volume (2.2K vs 2). On price, update cadence, ads and device support 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. TONE Telegenics asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

TONE Telegenics holds the better App Store score, 5.0 against 4.7. 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, TONE Telegenics every 3 weeks. The most recent releases landed on October 29, 2026 and September 24, 2026 respectively.

Scorecard4 real differences · 6 level
Audio Function Generator versus TONE Telegenics: the parameters behind the verdict, then further details
ParameterAudio Function GeneratorTONE Telegenics
PriceFreeFree
Rating4.7 (2.2K ratings)5.0 (2 ratings) — better
Positive reviews77.2% of reviews—
Number of ratings2.2K — better2
Update frequencyEvery 6 weeksEvery 3 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPadiPhone, iPod
Requires iOS16.015.0 — better
Further details — not scored
Size13 MB24 MB
Age rating4+4+
DeveloperThomas GruberThe Tone Knows

Customer experience

Audio Function Generator

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

TONE Telegenics

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

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 Telegenics

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

TONE Telegenics

No in-app purchases

Questions

Is Audio Function Generator free?
Audio Function Generator is free to download, with in-app purchases available.
Is TONE Telegenics free?
TONE Telegenics is free to download, with no in-app purchases.
Which has better reviews, Audio Function Generator or TONE Telegenics?
TONE Telegenics is rated higher. Audio Function Generator averages 4.7 out of 5 from 2.2K ratings, while TONE Telegenics averages 5.0 from 2 ratings.
Do Audio Function Generator or TONE Telegenics have ads?
Neither Audio Function Generator nor TONE Telegenics shows ads.
Which is updated more often, Audio Function Generator or TONE Telegenics?
Audio Function Generator ships an update every 6 weeks, and TONE Telegenics every 3 weeks. Most recently, Audio Function Generator was updated on October 29, 2026 and TONE Telegenics on September 24, 2026.

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