# iTuttle > Fat and warm subtractive monophonic/paraphonic synthesizer with extensive modulation. (iPhone/iPad app by Fabien MANCHEC.) - Source: https://appshunter.io/ios/app/ituttle/id707128902 (this page in markdown: same URL + `.md`) - Developer: [Fabien MANCHEC](https://appshunter.io/developer/480953922) - Category: Music, Music - Price: Free - Rating: 4.52/5 from 25 App Store ratings · 35 written reviews indexed - Age rating: 4+ - Requires: iOS 9.0 · 44 MB - Languages: English - Released: 2013-09-24 - Data updated: 2026-06-10 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/ituttle/id707128902/reviews.md ## What is iTuttle? iTuttle is an Awesome Fat & Warm Subtractive Monophonic/Paraphonic Synthesizer. Fat by Design with its 9 oscillators section, all waveforms but "Sinus" use generalized PWM (called "Ratio"), so you can tune/modulate the waveform of each oscillator / LFO. Its huge modulations capabilities lets you create a very large sound styles. The arpeggiator includes an 8 steps sequencer and lets you mute, change the gate duration, the groove and the velocity of each step. In addition, you can use the global Shuffle to humanize your arpeggios. It also sends its notes to MIDI Outs ! Specifications : ► 9 Oscillators section organized on 4 Oscillator Modes (Ramp, Pulse, Triangle, TriRamp, Sinus, Bi Pulse, Bi Ramp & Digital Noise) ► White Noise ► Full Stereo path (from Oscillators Section to FX) ► Pharaphony switch on all oscillator modes (up to three voice) ► 7 Filter types : - 24dB/oct Filters (Low Pass, Band Pass, Notch & Hi Pass) - Comb Filters (Comb + and Comb -) - Formant ► 3 Envelopes ► 2 LFOs (11 waveforms with Generalized PWM, even with Sinus/Cosinus) ► 2 X/Y Pads ► 8 Modulation Slots (20 Sources and 67 Destinations !!!) ► Arpeggiator with Shuffle/Groove, Step Controls and MIDI sending ► Stereo Delay with delay time modulation capability ► Full MIDI implementation (including MIDI CC Learn) ► Background Audio ► AudioBus support ► Inter-App Audio support ► User Bank sharing with Mail/Safari Needs iOS 9.0 or higher. Visit us : www.tbstuff.com Watch us : http://www.youtube.com/user/TBStuffCompany www.facebook.com/pages/TBStuff/262769697081433 ## Key features - 9 oscillators with generalized PWM - 7 filter types including Comb and Formant - Advanced arpeggiator with step sequencer - Extensive modulation matrix - Stereo Delay with modulation - Full MIDI implementation ## Recent user reviews (10 of 35) All indexed reviews: https://appshunter.io/ios/app/ituttle/id707128902/reviews.md ### 4/5 — Please add AUV3 support! *2023-06-02* This is a uniquely great synth that is severely limited by its lack of AUV3 support. ### 5/5 — This is an absolutely perfect synth *2023-04-22* It’s easy to use and the sound is incredible. Works well in Cubasis 3 I’m really impressed. ### 1/5 — Useless *2023-01-28* No AUV3 and doesn’t work with bluetooth headphones. What’s the point of the app then? ### 5/5 — So much wonderful here! *2021-11-07, version 2.1.1* Feature-packed app. In fact, the biggest issue is where to start. I'm a synthesizer noob, but even I sussed this is a quality (and ad-free!) piece of work. Many thanks to the dev. ### 5/5 — quite AMAZING! *2021-02-23* Thanks people, how can you be so nice? This is such a beautiful instrument, so many functions - and also free. BTW is there a manual maybe to explain what exactly each of the knobs and switches do? thanks again, well done jj. ### 5/5 — Tremendous *2020-11-12* Excellent interface, great sounds and at the current price it’s a gift! ### 5/5 — Excellent and great synth! Back to Cruisin’ Speed *2018-11-02* I was hoping that the developer would update to iOs 12 and they did. Still a great synth to have on your iPad. Highly recommended! **Developer response:** Be sure we work on this fix, it is at beta testing stage. EDIT : iTuttle 2.1.0 is available now on the App Store ### 1/5 — Ready for🗑 on iOS 12 *2018-10-06, version 2.0.0* Guess I shouldn’t expect much for the price. **Developer response:** We work on an update for iOS 12. It is on beta tests. EDIT : iTuttle 2.1.0 is available now on the App Store ### 5/5 — Great synth *2018-10-04* I had tons of enjoyment with this deep music maker. It could use an update, maybe make it an audio unit. ### 5/5 — Awesome I love it *2018-08-05* Awesome little synth and it’s totally free, thank you so much for giving us this synth to create some amazing sounds with, cheers, look forward to more from you...👍👍👍👍👍 ## Frequently asked questions about iTuttle ### What kind of synthesizer is iTuttle? iTuttle is a fat and warm subtractive monophonic/paraphonic synthesizer. It features 9 oscillators with generalized PWM, allowing for extensive waveform modulation. The app also includes a full stereo path from oscillators to effects. ### What are the key sound design features of iTuttle? iTuttle offers 9 oscillators with various modes, 7 distinct filter types (including Comb and Formant), 3 envelopes, and 2 LFOs with 11 waveforms. Its extensive modulation matrix with 8 slots, 20 sources, and 67 destinations provides immense sound sculpting potential. ### Does iTuttle support external MIDI devices or other audio apps? Yes, iTuttle has full MIDI implementation, including MIDI CC Learn, and its arpeggiator can send notes to MIDI Outs. It also supports Background Audio, AudioBus, and Inter-App Audio, allowing seamless integration with other music production apps. ### What are the system requirements for iTuttle? iTuttle requires iOS 9.0 or higher to run. It is designed for mobile devices running compatible versions of Apple's mobile operating system. ### How does the arpeggiator work in iTuttle? The arpeggiator in iTuttle includes an 8-step sequencer that allows you to mute, change gate duration, groove, and velocity for each step. It also features global Shuffle for humanizing arpeggios and can send its notes to MIDI Outs. ## Version history (last 5 releases) ### 2.1.1 — 2018-11-07 - Fix a crash when you plug an external audio interface ### 2.1.0 — 2018-10-31 - Restore Audio Input capability - AudiBus 3 support - iOS 12 bug fixes ### 2.0.0 — 2015-12-06 ► Audiobus 2 support (with State Saving) ► New Oscillators Mode : Drawbars ► Add Hard Sync on Osc 2 on Oscillators Mode « 3x3 » ► New Filter : Formant ► Add Filter’s Spreads (Cutoff and Resonance/Vowel) ► New Modulation Sources : Random Value (Bipolar & Unipolar) ► Save Keyboard’s configuration with each sound ► Remove Korg WIST ► Remove audio input ### 1.2.2 — 2014-02-27 ► Performance improvements ### 1.2.1 — 2014-01-24 - Fix issues with sound saving view ## Apps similar to iTuttle | App | Rating | Price | Category | | --- | --- | --- | --- | | [Sound: Discover Music](https://appshunter.io/ios/app/sound-discover-music/id6446258640) | 4.9 (26) | Free | Music | | [Radio Samui](https://appshunter.io/ios/app/radio-samui/id6444288500) | — | Free | Music | | [Practice Scales](https://appshunter.io/ios/app/practice-scales/id1566545220) | 5.0 (1) | Free | Music | | [Radio Camino De Luz](https://appshunter.io/ios/app/radio-camino-de-luz/id1561891140) | — | Free | Music | | [TV Hispanic HD](https://appshunter.io/ios/app/tv-hispanic-hd/id1562210980) | — | Free | Music | | [Tillt Radio](https://appshunter.io/ios/app/tillt-radio/id1562840760) | 5.0 (1) | Free | Music | --- *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 2026-06-10.*