# Generator — Audio Signal Generator > Professional audio signal generator for iOS devices. (iPhone/iPad app by Andrew Smith.) - Source: https://appshunter.io/ios/app/generator/id298840802 (this page in markdown: same URL + `.md`) - Developer: [Andrew Smith](https://appshunter.io/developer/291822462) - Category: Music - Price: $8.99 - Rating: 3.30/5 from 3 App Store ratings · 18 written reviews indexed - Age rating: 4+ - Requires: iOS 13.0 · 23 MB - Languages: American English, French (France), German (Germany), Japanese, Polish, Chinese (Simplified, China), European Spanish, Swedish - Released: 2009-01-04 - Data updated: 2026-08-14 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/generator/id298840802/reviews.md ## What is Generator? A high-quality audio Signal Generator for the iPhone. Now you can have a professional grade signal generator for your iPhone. Create sine waves, square waves, white noise, and pink noise. Don't let the well-worn look of this classic audio must-have fool you, Generator is accurate, reliable, precise, and clean. ** NEW! Now supports remote control over WiFi from our AudioTools app. Connect an iOS device running Generator to your audio system, link to AudioTools on another device, and control Generator from AudioTools as you are free to move around. Requires that both devices be on the same LAN. In sine and square wave mode, you can select between 20Hz and 20kHz using a controller that has three resolutions: octave, 1/3 octave, and fine. Frequency selection is controlled by smooth-gliding interlocking control wheels. Just spin to change frequency, by octaves, 1/3 octaves, or select fine mode to sweep through any value. *** NEW: Tap the frequency screen to pop up a keyboard so that you can enter any exact frequency. *** NEW: Tap the Wobble button to create a warble-tone signal for acoustics work. Doubles as an emergency siren! When you are generating pink noise and white noise, you can select full band (20Hz-20kHz), or octave band limited noise for acoustical testing. All waveforms are laboratory accurate, and use ANSI / IEC spec filters where appropriate. The frequency sweeps smoothly, with no glitches. The mute is soft, to prevent loud impulses when mute or turning on a lower-frequency signal. This signal can be sent to both channels (stereo), just the right or left channel, or the right channel output phase can be inverted for pseudo-balanced mode. This mode can be used with our iPhone Balanced Cable Adapter to get a balanced signal from your iPhone. See our web site for more information. On an iPhone 3G, we have measured distortion at .006% THD at 1000Hz at full volume (+6.5dBu balanced). See our web site for more level details. Note that digital square waves suffer from aliasing problems, and sound very strange above about 1500Hz. Future versions will have options to select different skins. Check out out other great professional-grade audio and acoustics apps: SPL, the iPhone professional-grade sound level meter, SPL Graph, for recording SPL over time, RTA, a 1/3 octave real time analyzer, FFT, for detailed audio analysis, ETC, the iPhone energy-time curve and decay app, RT60, for automated octave-band decay measurement, and Speaker Pop, the speaker polarity tester. Email us within any questions, problems, or suggestions, we answer all emails promptly. ## Key features - Sine, square, white noise, and pink noise generation - Precise frequency control (20Hz-20kHz) - Octave, 1/3 octave, and fine frequency resolution - Remote control over WiFi via AudioTools app - Warble-tone signal generation - Stereo or mono output options ## Recent user reviews (10 of 18) All indexed reviews: https://appshunter.io/ios/app/generator/id298840802/reviews.md ### 5/5 — Low THD *2021-02-14* There are better generic sine wave generators. Use this one if you are trying to measure distortion. Out of the generators I have tried, this is the only one with a THD spec mentioned. In practice, it is a much cleaner source than my other software generators. I assume this is because the designer took the time to add filtering to the output. For audio measurements this crucial. ### 2/5 — Awful interface *2019-02-21* I never write reviews, so I’ll make this short. Save your money. Remember all sales are final and you get no refunds for trying stuff out. I gave it two stars because well, it makes noise once you disengage the mute button. The interface is cumbersome and very 1980’s. Very few options, and there’s better options out there. Sorry. ### 1/5 — iOS 12 can not use *2018-09-26* iOS 12 can not use ### 3/5 — Fine control is frequency sweep *2017-06-04* Please bring back the fine control of the frequency select dial. The rotor dial when in portrait mode helped select very fine specific frequency of sign tone. ### 5/5 — extremely useful sound tech app *2014-02-07* I plug a handset into my phone when I'm mixing a show. If I hear a frequency I don't like, or something that's about to feedback, I fire up Generator and match the pitch. This tells me precisely what frequency needs to be notched. With this update, it once again runs fine on my 3GS (iOS 6.13) and my iPad Touch 4 (iOS 6.15). Great use for obsolete devices. ### 5/5 — Wieder gut wie früher... *2011-12-03, version 3.0* Nach dem Fix für das iOS5 läuft die App wieder zuverlässig. Vielen Dank, dass ihr euch meiner Kritik angenommen habt. Es ist seit zwei Jahren eine der meistbenutzten Apps bei mir im Akustik-Messlabor. ### 1/5 — ios5 killed it *2011-11-03* this used to be a near perfect app but does not work under ios5 and even locks the sound device so other apps and music cannot be played until a reboot has been performed please update this app as its one of my favourites ### 5/5 — Absolut super *2009-08-25, version 0* Spitzen Sache. Setze ich bei fast jedem live Job ein um schnell grobe Unstimmigkeiten bei Clubanlagen zu erörtern. ### 5/5 — Tongenerator!! *2009-08-16, version 0* Auf solch eine App habe ich gewartet. Ich bin sehr zufrieden mit dem Tongenerator ( die Qualitaetsgrenze wird allerdings vom Kopfhoererausgang des iPod Touch/iPhone bestimmt), inbesondere die von analogen Geraeten bekannte Benutzeroberflaeche ueberzeugt. ### 3/5 — tone generator *2009-08-01* VERY low output. Just about unusable for the purposes that I had originally purchased it for. Can folks return apps when they just do not function as they they were advertised to be? ## Frequently asked questions about Generator ### What audio signals can Generator create? Generator can create sine waves, square waves, white noise, and pink noise. It offers precise control over frequency selection and output modes. ### Does Generator have ads? No, Generator does not contain advertisements. It is a paid application designed for professional use. ### What devices does Generator support? Generator is available for iPhone, iPad, and iPod. It requires iOS 4.0 or later. ### How accurate is Generator's signal output? Generator is described as laboratory accurate, using ANSI / IEC spec filters where appropriate. Distortion levels are measured at .006% THD at 1000Hz at full volume. ### Can I control Generator remotely? Yes, Generator supports remote control over WiFi from the AudioTools app. Both devices must be on the same local network. ### What is the price of Generator? Generator is priced at $8.99. This is a one-time purchase and does not involve subscriptions. ### How often is Generator updated? The latest version of Generator is 6.9, last updated on December 22, 2025. Updates are released periodically to improve functionality and reliability. ### What is the age rating for Generator? Generator has an age rating of 4+, making it suitable for a wide range of users. ## Version history (last 5 releases) ### 6.9 — 2025-12-22 -Bug fixes and stability improvements ### 6.8 — 2025-11-24 -Updated for new iOS devices -Bug fixes and stability improvements ### 6.7 — 2024-11-20 -Updated for latest iOS devices and calibrations -Bug fixes and operational improvements ### 6.6 — 2024-07-10 -Updated for latest iOS devices and calibrations -Bug fixes and operational improvements ### 6.5 — 2023-10-19 -Updated for latest iOS devices and new iOS versions -Bug fixes and stability improvements ## Apps similar to Generator | App | Rating | Price | Category | | --- | --- | --- | --- | | [Noise Gate AUv3 Plugin](https://appshunter.io/ios/app/noise-gate-auv3-plugin/id1436698776) | 4.5 (4) | $5.99 | Music | | [KA mini DiZi](https://appshunter.io/ios/app/ka-mini-dizi/id6478074079) | 5.0 (6) | $1.99 | Music | | [Audio Analyzer](https://appshunter.io/ios/app/audio-analyzer/id1482367696) | 5.0 (2) | $3.99 | Music | | [Oscilloscope](https://appshunter.io/ios/app/oscilloscope/id388636804) | 4.1 (19) | $19.99 | Music | | [Apogee Soft Limit](https://appshunter.io/ios/app/apogee-soft-limit/id6471695616) | 5.0 (1) | $9.99 | Music | | [Slightly Unhinged Radio](https://appshunter.io/ios/app/slightly-unhinged-radio/id6758023513) | 5.0 (1) | Free | Music | ## More apps by Andrew Smith - [Speaker Polarity](https://appshunter.io/ios/app/speaker-polarity/id293263027) - [SPL](https://appshunter.io/ios/app/spl/id293573990) - [RTA](https://appshunter.io/ios/app/rta/id298839433) - [FFT](https://appshunter.io/ios/app/fft/id298840058) - [RT60](https://appshunter.io/ios/app/rt60/id298840320) All apps by Andrew Smith: https://appshunter.io/developer/291822462 ## Related topics [quantum audio generator](https://appshunter.io/ios/topics/quantum-audio-generator) · [test signal generator](https://appshunter.io/ios/topics/test-signal-generator) · [psg9000 signal generator](https://appshunter.io/ios/topics/psg9000-signal-generator) · [diapason audio generator](https://appshunter.io/ios/topics/diapason-audio-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 2026-08-14.*