Audio Function Generator vs Noise Generator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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)
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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
Noise Generator
Generate a variety of custom color noises, including brown, pink, white, blue, and violet. Fine-tune your audio experience with low and high cut filters. This app offers a simple interface that remembers your settings for quick, personalized sound generation.
- Generate brown, pink, white, blue, and violet noise
- Low and high cut filters for customization
- Simple interface remembers settings
- Advanced mathematical formulas for audio generation
- AirPlay support for external devices
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Generate custom color noises including brown, pink, white, blue, and violet. Customize noise further by using low and high cut filters. Simple modern interface remembers all settings for quick generation and utilizes advanced mathematical formulas to generate all audio waves. There are no audio files included in the application binary which keeps app size to a minimum and app performance to a maximum. What are benefits of listening to white noise? - Helps you sleep by blocking distractions - Pacifies fussy and crying babies - Relaxes and reduces stress - Increases focus while enhancing privacy - Soothes headaches and migraines - Masks tinnitus (ringing of the ears) What are the different sound colors? - White noise sounds similar to static of an analog TV or radio station that has stopped broadcasting. White noise has equal energy across all sound frequencies. - Brown noise sounds like a powerful waterfall. It has more energy at the lower frequencies and if you have a good speaker system with a subwoofer you should be able to really feel it. - Pink noise's upper sound frequencies don't fall off as fast as they do with brown noise, so you'll get a little more punch. The most interesting thing about pink noise is it's found in almost all electronic devices (known as flicker noise) and even in biological systems. - Blue and violet noise are the opposites of pink and brown noise, respectively, and sound like spraying water from a garden hose. It has more energy at the higher frequencies which means more treble and less bass. - Curious to learn more about color noises? Check out this article for all the details: http://www.tmsoft.com/white-noise-player/ Directions: Drag the Sound Color slider to select brown, pink, white, blue, violet, or somewhere in-between. Next, drag the low and high cut filters to further customize to your liking. Adjust device volume using the on-screen volume slider to a comfortable level. You can also specify to play audio to any AirPlay supported device. Toggle audio playback using the Play/Pause button. Created by the audio experts at TMSOFT that brought you the famous White Noise app. Check out all our apps and sounds at http://www.tmsoft.com/
Screenshots
Verdict
The clearest difference is in-app purchases: Noise Generator at none against Audio Function Generator's 1. Audio Function Generator's advantage is ads (none vs shown). On price, rating, review sentiment and ratings volume 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
Both are free to download. Audio Function Generator sells 1 one-off in-app purchase. Noise Generator asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.7 for Audio Function Generator against 4.7 for Noise Generator. Both are backed by a comparable volume of ratings — 2.2K and 2K respectively. Written reviews are what separate them: 77% of Audio Function Generator's written reviews are positive against 75% of Noise Generator's.
Audio Function Generator ships an update every 6 weeks, Noise Generator every 3 weeks. Both last shipped on September 24, 2026.
| Parameter | Audio Function Generator | Noise Generator |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (2.2K ratings) | 4.7 (2K ratings) |
| Positive reviews | 77.1% of reviews — better | 74.7% of reviews |
| Number of ratings | 2.2K — better | 2K |
| Update frequency | Every 6 weeks | Every 3 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.5 | 14.0 — better |
| Further details — not scored | ||
| Size | 14 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | Thomas Gruber | TMSOFT |
Customer experience
Audio Function Generator
Noise Generator
User reviews
Audio Function Generator
From 2.2K App Store ratingsWhat we love
- 👍 Great app
- 🎶 Helps with Tinnitus
- 💯 Best app I've paid for
- 🔍 Highly recommended
- 🎨 Attention to detail
Room to improve
- 🐛 Crashes
- 💰 Deceptive/Money hungry
- 🔒 Basic features paywalled
- 🔒 Limited without paying
- 🔒 Removed functionality to push paid version
Noise Generator
From 2K App Store ratingsWhat we love
- 🚀 Spot on performance
- 👍 Customizable noise options
- 🚀 Wide range of frequency spectrum
- 👍 Convenient for sleeping and focus
- 👍 Helps with tinnitus and anxiety
Room to improve
- 🐛 Crashes and stops working
- 🐛 Ads interfere with functionality
- 🔋 High battery drain
- 🐛 Unreliable, cuts out randomly
- 🐛 Detectable sound pattern loop
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
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- Improve accessibility (VoiceOver support)
Noise Generator
Reported bugs
3 issues- Scrolling issues on iPhone 13 Pro
- Beeping noise looping in background
- Stops playing when app is in background
Requested features
5 requests- Add green noise option
- Ability to save custom presets
- Include a sleep timer
- Landscape mode support
- Equalizer/smoother frequency controls
In-app purchases
Audio Function Generator
- Upgrade to PRO$9.99
Noise Generator
No in-app purchases
Questions
Is Audio Function Generator free?
Is Noise Generator free?
Which has better reviews, Audio Function Generator or Noise Generator?
Do Audio Function Generator or Noise Generator have ads?
Which is updated more often, Audio Function Generator or Noise Generator?
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