# iFunctionGenerator > iOS audio function generator with multiple waveforms and precise control. (iPhone/iPad app by Black Cat Systems.) - Source: https://appshunter.io/ios/app/ifunctiongenerator/id304851755 (this page in markdown: same URL + `.md`) - Developer: [Black Cat Systems](https://appshunter.io/developer/301047032) - Category: Utilities, Music - Price: $2.99 - Rating: 4.40/5 from 9 App Store ratings · 15 written reviews indexed - Age rating: 4+ - Requires: iOS 6.0 · 1 MB - Languages: American English - Released: 2009-02-14 - Data updated: 2026-08-12 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/ifunctiongenerator/id304851755/reviews.md ## What is iFunctionGenerator? iFunctionGenerator turns your iPhone, iPad, or iPod Touch into an audio function generator. You can have up to 20 generators, each operating at a different frequency. Each generator can be one of the following types: • Sine Wave • Triangle Wave • Sawtooth Wave • Square Wave • Pink Noise • White Noise The volume of the left and right channels can be independently controlled, and may be set using either a slider for ease, or direct entry of the volume, for maximum precision. The relative phase of each channel may also be set. Frequencies from 1 to 20,000 Hz may be entered. The phase can vary between -360 to 360 degrees. The volume may be between 0 and 100 percent. The mute button makes it easy to quickly silence the audio generators. You can take snapshots of the generator settings. This lets you build a library of settings, and quickly load the desired settings. ## Key features - Multiple waveform generation (sine, triangle, sawtooth, square) - Pink and white noise generation - Up to 20 independent generators - Independent left/right channel volume control - Adjustable frequency from 1 to 20,000 Hz - Phase control - Save and load generator settings ## Recent user reviews (10 of 15) All indexed reviews: https://appshunter.io/ios/app/ifunctiongenerator/id304851755/reviews.md ### 5/5 — Wizard says *2025-06-17* Wizard says it’s great. More power out of your apple/audiojack device if only using first channel. ### 5/5 — Sehr gut *2021-04-01* Die einzige Art meine Tinitusfrequenz zu finden ### 1/5 — Doesn’t work with iOS 13 *2020-02-08* Do not download. Reporting to Apple. ### 1/5 — Doesn’t work *2019-09-20* I just paid £2.99 for something that doesn’t even work! If you are going to charge, provide a decent app that works!!! Refund please! ### 4/5 — It does what I need it to do ... and very well. *2018-05-28* I needed a simple stereo frequency generator to produce two closely spaced audio sine-wave frequencies in order to demonstrate the “binaural beat” capability of our human minds to perform a differential frequency analysis of two discrete audio signals and present the differential to us. This app does a beautiful job of this. I took one star away because it does have a minor bug of occasionally locking-up (which killing and re-opening it fixes), and the physical interface is real easy for me to “fat finger”. In summary, this app has both the precision and the flexibility to do exactly what I need it to do, and I am very grateful and pleased to have found it. BTW: The app produces discrete left and right signals with no mixing ... IF you are taking the signals directly out of your phone’s earphone port. If you are listening to the output via a bluetooth device, then you are going to hear a whole bunch of channel mixing. This is not the app’s fault. ### 5/5 — Great app *2017-06-27* Create your own TRUE binaural beats! Great app for us geeks! ### 5/5 — Excellent app. *2016-08-13* Full function, intuitive, easy to use. Nicely designed. ### 1/5 — Pointless as there's no sound output now *2015-03-06* Worked one day, stopped working the next. Every other app I have makes intended sounds. This one never seems to. Completely useless. ### 2/5 — No sound output *2013-12-23* Info instruction tell you everything you want to know but little of use to use this . No audible output no matter what settings you apply. Does not live up to its description or title. A disappointment. ### 5/5 — Sehr gut! *2013-11-08* Man kann leicht Schwebungen generieren. ## Frequently asked questions about iFunctionGenerator ### What types of audio signals can iFunctionGenerator produce? iFunctionGenerator can produce sine waves, triangle waves, sawtooth waves, square waves, pink noise, and white noise. It offers a wide range of signal types for various testing and creative needs. ### How many generators can iFunctionGenerator create simultaneously? You can have up to 20 independent generators running at the same time. This allows for complex signal layering and testing scenarios. ### What are the frequency and volume ranges for iFunctionGenerator? Frequencies can be set from 1 Hz to 20,000 Hz, and volume can be adjusted from 0 to 100 percent for each channel. This provides granular control over your audio output. ### Can I save my generator settings in iFunctionGenerator? Yes, you can take snapshots of your generator settings to build a library. This feature allows you to quickly load and recall specific configurations for future use. ### What devices does iFunctionGenerator support? iFunctionGenerator is compatible with iPhone, iPad, and iPod Touch devices. It is designed to leverage the audio capabilities of these Apple products. ### How often is iFunctionGenerator updated? The latest version of iFunctionGenerator is 2.5, which was last updated on July 2, 2017. While updates are not frequent, the app has been stable and functional since its release. ### What is the price of iFunctionGenerator? iFunctionGenerator is a paid application, available for $2.99. This one-time purchase grants you access to all its features without additional costs or subscriptions. ### Does iFunctionGenerator have ads? No, iFunctionGenerator does not contain advertisements. As a paid application, it offers an uninterrupted user experience without any ad interruptions. ## Version history (last 5 releases) ### 2.5 — 2017-07-02 This update from Apple will improve the functionality of this app. No new features are included. Updates for iOS 10 64 bit ### 2.4 — 2015-05-01 Added support for Bluetooth audio devices Fixed a bug that could cause a crash under iOS 8.3 when creating a snapshot. ### 2.3 — 2015-03-17 Fixes a bug that could cause loss of sound on iOS 8. ### 2.2 — 2015-02-18 Updates for iOS 8.1.3 Bug fixes for generating different types of waveforms at the same time. ### 2.1 — 2013-11-20 Support for iOS 7. Fixes a bug that could cause sliders to affect the wrong settings. ## Apps similar to iFunctionGenerator | App | Rating | Price | Category | | --- | --- | --- | --- | | [Tone Generator: Harmoniq](https://appshunter.io/ios/app/tone-generator-harmoniq/id6744338213) | — | Free | Utilities | | [PSKer](https://appshunter.io/ios/app/psker/id506427138) | 1.8 (22) | $2.99 | Utilities | | [Cloud4UPS](https://appshunter.io/ios/app/cloud4ups/id1579441535) | — | Free | Utilities | | [Viko - Video URLS For Safari](https://appshunter.io/ios/app/viko-video-urls-for-safari/id6739488149) | — | $0.99 | Utilities | | [UTC ALARM](https://appshunter.io/ios/app/utc-alarm/id6757993387) | — | Free | Utilities | | [PSExampleApp](https://appshunter.io/ios/app/psexampleapp/id6450264559) | — | Free | Utilities | ## More apps by Black Cat Systems - [WireCalc](https://appshunter.io/ios/app/wirecalc/id301047029) - [Transmission Line Calc](https://appshunter.io/ios/app/transmission-line-calc/id302734281) - [RF Link Calc](https://appshunter.io/ios/app/rf-link-calc/id303034300) - [dB Calc](https://appshunter.io/ios/app/db-calc/id303470503) - [Drill Calc](https://appshunter.io/ios/app/drill-calc/id304434324) - [Photon Calc](https://appshunter.io/ios/app/photon-calc/id304436071) All apps by Black Cat Systems: https://appshunter.io/developer/301047032 ## Related topics [function generator pro](https://appshunter.io/ios/topics/function-generator-pro) · [function wave](https://appshunter.io/ios/topics/function-wave) · [function generator](https://appshunter.io/ios/topics/function-generator) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-12.*