iTuttle 4+


    • 4.5 • 25 Ratings
    • Free

iPad Screenshots


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.

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What’s New

Version 2.1.1

- Fix a crash when you plug an external audio interface

Ratings and Reviews

4.5 out of 5
25 Ratings

25 Ratings

MuzikalaChristo ,

Update of this power house synth Now with audio buss

Fat and chunky ,flexible and very fun to write sounds on! The new menu and save area is great and this synth turned my iPad into a really powerful tool for playing live and sounds as good as any hard ware or plug in synth that I own ! So don't touch my Tuttle dude! Peace christo😀😀😀😀😀

Music Mogul ,

Can Synth software developers make Audio Demos?

Please,,,, Can the Developers Of All these cool and Not So Cool Apps provide the potential customers with an Audio demo Of what the synth, drum machines, or other sound generating apps Actually sound like with a simple audio clip embedded in their ads?

When a musician wants an instrument or software and really has to make a decision based on budget, hardware compatibility, ease of use, etc.,they go to a music store or website to Hear and see the products.

It’s a common practice here on the AppStore for developers to Say how great the software is and show stills of the screen graphics, or short video clips, However, if there was more companies that provide audio demo for the customer to hear, it would make it easier, fast and perhaps even more profitable for the developers and Apple.

Thanks In Advance

A. MusicIan

Developer Response ,


You have some demo sounds on our website ( since 2013 october... 😉

BlackPearlie ,

So much wonderful here!

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.

App Privacy

The developer, TBStuff, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.

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