# 76477 Complex Sound Synth — Complex Sound Synthesizer > Vintage-inspired sound effects generator and synthesizer with advanced modulation. (iPhone/iPad app by Black Cat Systems.) - Source: https://appshunter.io/ios/app/76477-complex-sound-synth/id837866239 (this page in markdown: same URL + `.md`) - Developer: [Black Cat Systems](https://appshunter.io/developer/301047032) - Category: Music, Utilities - Price: $2.99 - Rating: 4.00/5 from 10 App Store ratings · 10 written reviews indexed - Age rating: 4+ - Requires: iOS 12.0 · 4 MB - Languages: American English - Released: 2014-03-17 - Data updated: 2026-08-12 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/76477-complex-sound-synth/id837866239/reviews.md ## What is 76477 Complex Sound Synth? Synth 76477 is a powerful sound effects generator and synthesizer app, inspired by the famous SN76477 integrated circuit from the 1970s, but containing many enhancements. Features: • Three oscillators, each of which can produce a sine, triangle, sawtooth, or square wave • The outputs of two of the oscillators can be used to modulate the main oscillator • Frequency modulation can be linear or octave based • The duty cycle of the main oscillator can be adjusted in square wave mode • Noise generator, either analog or digital, with an adjustable low pass filter • Oscillator outputs can be mixed to the audio output • Fully configurable ADSR (Attack / Decay / Sustain / Release) envelope, linear or exponential • One shot mode available • Unlimited number of sound effect generator boards • User configurable array of sound effect generator buttons on each board, up to 50 on the iPhone and 150 on the iPad • Boards as well as individual generators can be exported and imported, and transferred to and from your computer via iTunes file sharing, making it easy to share with others Synth 76477 comes with a full set of sample sound generators, making it easy to understand how to use and configure them, and tap the full power of the app. Synth 76477 works with MIDI input devices (keyboards and controllers) in several interesting ways: If you plug a MIDI device into an iPad (via the USB Camera Connection Kit), Synth 76477 will automatically use it. You can plug several MIDI controllers in via a powered HUB, and Synth 76477 will use all of them. You can also use MIDI controllers over WiFi. Midi controllers can be used to trigger chip playback, or set the VCO frequency and volume. They can also be used in the chip editor to adjust the various settings. The app also supports Bluetooth audio devices. Visit the support page for step by step instructions on how to use the app: http://www.blackcatsystems.com/ipad/complex_sound_synthesizer_FAQ.html Buy your copy right now, and start generating your own sound effects in minutes. ## Key features - Three oscillators with multiple wave types - Modulation capabilities for oscillators - Adjustable noise generator with filter - Configurable ADSR envelope - Unlimited sound effect generator boards - MIDI input support - Export/import sound effect boards ## Recent user reviews (10 of 10) All indexed reviews: https://appshunter.io/ios/app/76477-complex-sound-synth/id837866239/reviews.md ### 1/5 — What junk. *2023-02-08* Really poor! ### 4/5 — Landscape mode please! *2017-07-30* Neat app but sorely needs landscape mode. ### 3/5 — Good but crashes *2015-04-28* Did what I needed, but crashed and lost my custom boards&sounds before I could export ### 5/5 — under rated synth sonic freak out!! *2015-02-01* whoa what the..... so many sounds so so so so so many sounds!! i feel like i bought a box of crackerjacks and the whole was packed with prizes... this collection of synths is ridiculous.i love it . i have looked at this app for a while now and said to myself meh its a corny gimicky noisemaker.. hell no i was wrong . this is like having hundreds of little analog synths under your fingertips at one time.. amazing sonic freak out i love you ### 2/5 — Not working in audiobus *2015-01-25* This app needs audiobus ### 4/5 — Nice *2014-09-29* Back to basics. ### 4/5 — Absolutely amazing!!! *2014-04-21* WOW man I'm trippin out doods! This is a quality title and I'm glad I bought it unlike some other purchases on ios. Perfect for dub sirens or any period sound effects. Or just trippy sounds for your scifi film! One thing I think it needs desperately is a midi input and assigned note number for every pad. ### 3/5 — BREF *2014-04-05* çà va si on n'a du temps pour chercher des petit sons bien sympas, je reste a trois étoiles ### 5/5 — RIGHTEOUS! *2014-04-02* I was actually going to write the developer to introduce'em' to the Audiobus program ....in hopes ov convincing him/her/it/them...to 'bus their oscillator app :since no one has yet put a Stereo ToneGen to date '?' & how 'profitably accurate ' it would fit in the present'line-up'....nevertheless this is powerfully-simplifiablily-informative & overduely-welcome ....! ### 3/5 — Goodish *2014-03-19* Good but needs audiobus Please ## Frequently asked questions about 76477 Complex Sound Synth ### What kind of sounds can 76477 Complex Sound Synth create? 76477 Complex Sound Synth is designed to generate a wide range of sound effects and musical tones. It features three oscillators capable of sine, triangle, sawtooth, and square waves, along with a noise generator and customizable envelopes, allowing for complex and unique audio textures. ### Can I use 76477 Complex Sound Synth with external hardware? Yes, 76477 Complex Sound Synth supports MIDI input devices such as keyboards and controllers. You can connect these devices via USB or Wi-Fi to trigger playback, set frequencies, adjust volume, or edit chip settings directly within the app. ### How does 76477 Complex Sound Synth handle sharing and backups? You can export and import sound effect generator boards, as well as individual generators. These can be transferred to and from your computer via iTunes file sharing, making it easy to back up your creations or share them with other users. ### Is 76477 Complex Sound Synth suitable for beginners? The app comes with a full set of sample sound generators that help users understand how to use and configure its features. This makes it easier to tap into the app's full power, even for those new to synthesis. ### What devices does 76477 Complex Sound Synth support? 76477 Complex Sound Synth is available for iPhone, iPad, and iPod touch, offering a versatile tool for music creation across Apple's mobile ecosystem. ### How often is 76477 Complex Sound Synth updated? The latest version, 2.0, was updated on August 12, 2025. While specific update frequency isn't detailed, the release of a new version indicates ongoing development and support for the application. ### What is the price of 76477 Complex Sound Synth? 76477 Complex Sound Synth is a paid application, available for $2.99. There are no in-app purchases or subscriptions mentioned. ### Does 76477 Complex Sound Synth have ads? No, 76477 Complex Sound Synth does not contain advertisements. It is a premium application that offers an ad-free experience for users. ## Version history (last 5 releases) ### 2.0 — 2025-08-12 Bug fixes and performance improvements. ### 1.5 — 2017-04-25 This app has been updated by Apple to display the Apple Watch app icon. Updates for iOS 10.3. Fixed a bug that could cause changes to chips to not be saved. ### 1.4 — 2015-04-24 Added support for Bluetooth audio devices. ### 1.3.3 — 2015-01-20 Fixes a bug that could cause a crash under iOS 8.1.2. ### 1.3.2 — 2014-10-23 Bug fixes for iOS 8. ## Apps similar to 76477 Complex Sound Synth | App | Rating | Price | Category | | --- | --- | --- | --- | | [Nikaya Wavetable and FM Synth](https://appshunter.io/ios/app/nikaya-wavetable-and-fm-synth/id6744972629) | 4.4 (8) | $6.99 | Music | | [synthQ](https://appshunter.io/ios/app/synthq/id950094378) | 4.2 (13) | $5.99 | Music | | [WoodSynth](https://appshunter.io/ios/app/woodsynth/id1538126998) | 4.0 (26) | $15.99 | Music | | [Synthecaster](https://appshunter.io/ios/app/synthecaster/id705067086) | 4.9 (14) | $0.99 | Music | | [BASSalicious 2](https://appshunter.io/ios/app/bassalicious-2/id1459637872) | 3.8 (9) | $14.99 | Music | | [Crystal Synth XT](https://appshunter.io/ios/app/crystal-synth-xt/id408288370) | 4.9 (20) | $4.99 | Music | ## 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 --- *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.*