FS Refraktor Modulation Effects
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FS Refraktor is an innovative twist on modulation effects, inspiring the exploration of new sonic territory. Sitting somewhere between a delay and a flanger, FS Refraktor offers endless possibilities, from rhythmic flanging to chaotic pitch modulation and unpredictable stuttering.

Whoa this is such a cool multi effects app! I’m loving it so much. Thanks FutureSonic. – Jason

The highly flexible sixteen step sequencer and LFO rhythmically warp sounds beyond recognition – standard drums beats become bleeping basslines and synths gain a mind of their own, generating melodies from thin air.

The sequencer’s Slew control varies the speed at which the delay time changes – low settings produce sudden jarring variations while higher settings transition smoothly between delay times.

Bypass the sequencer, and FS Refraktor will add metallic overtones and strange resonances to your sounds, similar to a short, reflective reverb.
Carve Revolutionary Sounds
The dedicated filter section makes it simple to sculpt your sound. Select from a range of versatile filter types: Low Pass, High Pass, Band Pass, Notch and FS Refraktor’s unique Carve mode.

– Delay section with delay time, feedback, modulation and mix controls
– A highly customizable sequencer for rhythmic modulation of the delay time
– Slew control to vary the speed of delay time changes.
– A versatile filter section with Low Pass, High Pass, Band Pass, Notch and Carve filter options
– Stereo spread control for creating wide out of phase sounds.
– Runs as both a standalone app and an AUv3 extension
– Ability to save presets when run as an AUv3 extension

Get FS Refraktor

Audio Damage Discord4 Multi Effects
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Discord4 is the latest version of our most popular and long-lived product, our Discord stereo pitch shifter. Originally modeled from the H910, Discord has long since become its own effect and a studio standby, and this version includes major additions to further stretch its capabilities. This application includes a stand-alone version (with Inter-App Audio) and an AUv3 effect for use in hosts that support that format, such as Beatmaker 3, AUM, Cubasis, and Garageband. A full PDF manual is available at the Audio Damage website.

Discord4 consists of three separate algorithms: a “vintage” mode (the original Discord algorithm, modeled on the Eventide H910 and H949), a “clean” mode for more modern shifting sounds, and a “granular” mode for experimental effects. Each mode has its strengths, depending on the input material, and Discord3 has a broad palette of capabilities as a result. The P1 and P2 algorithms have full control over the buffer (window) size of the shift effect, for fine tuning the shift to the input signal, or for stranger sound effects. At the extremes of the six-octave shift range, some truly strange aliasing and artifacts can be had with this control.

Discord4 retains its pair of tempo-synced delays and bandpass filters from previous versions, and adds a reverb in the feedback loop (for easy access to “shimmer” effects). We have also replaced the modulation sources from the original with our all-new FLFO (Flexible LFO) design. Panorama controls are included to control the stereo width of the wet signal. Finally, soft saturation and limiting have been added or improved throughout the signal path, for an overall improved sound and added vintage-style warmth, and to allow for extreme feedback experiments without fear of overloading your DAW’s channel.


• Pitch Shifting: Discord4 contains a pair of shifters with three separate algorithms (Vintage, Clean, and Granular) for different styles of pitch shifting.

• Buffer Size Control: The P1 (Vintage) and P2 (Clean) algorithms have a Buffer Size control, from 32 to 2048 samples, for fine-tuning the pitch shifting effect.

• Delay: Tempo-synced or free-running delays with feedback, cross-feedback, and a sophisticated bandpass filter.

• Reverb: A simple stereo reverb is added to the feedback path, for “shimmer” effects and further sound exploration.

• Modulation: Two of our new FLFO (Flexible Low-Frequency Oscillator) with tempo sync and an arbitrary waveform, capable of a nearly infinite number of modulation shapes using only three controls.

• True Stereo Operation: Discord4 has a true stereo signal path, with entirely independent control over each side, finishing with panorama settings for stereo width.

• MIDI Note Control: Six octaves of pitch-shifting can be controlled with MIDI note input.

• All-New GUI: Vector-based resizable user interface.

• Presets: Cross-platform XML-based preset manager.

Get Discord4

Future Sonic Reverser Delay AU
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A stereo delay effect with LP/HP filter, can be used as an audio unit or as a standalone application. The Reverser Delay is a crystal-clear stereo delay comprised of independent left and right delay channels giving the user separate control over the delay time and feedback for each channel. Each channel also has a dedicated filter to sculpt the tone of the repeats, with the option of switching between high pass and low pass.

However, the crown jewel of the Reverser Delay is its reverse feature which allows for either the left or right delay channels (or both) to be reversed allowing for sonic experimentation not capable on a typical delay unit.

The Reverser Delay makes experimentation simple with an easy to understand user interface. But if users aren’t sure where to start, they can jump straight in and explore the Reverser Delay’s factory presets for inspiration.


– Stereo delay effect with delay offset, reverse mode, feedback and mix
– Tape-like resyncing of delay offset
– Per-channel state variable filter, offering low pass and high pass modes
– Mono or stereo input
– Clean and simple design
– Runs on both iPads and iPhones
– Selection of factory presets (available when run in an Audio Unit host)

Get FS Reverser Delay

Virsyn AudioEffX Multi-effects Audio Unit
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Multieffect Audioprocessor for iOS. Seven studio quality effect modules for live usage and to enrich your iTunes music library.

### Introductory offer 30% off ###

All effect modules can be used together chained in any order you like.

The Chorus effect is a modulation effect used used to create a richer, thicker sound and add subtle movement. The effect roughly simulates the slight variations in pitch and timing that occur when multiple performers sing or play the same part.

The Delay effect provides you with two different types of delay effects using two delay lines. With Sync mode the delay times can be set by note lengths and are then relative to the currently set tempo. The delayed signal can be feed back to the input for echo effects. You can select between a stereo delay and a ping-pong delay where the echoes bounces across the stereo field.

The Drive effect provides you with different types of distortion from hard clipping to soft distortion simulating analog tube amplifiers and tape machines. The sound balance can be adjusted using a combined High/Lowpass filter.
The distortion algorithm uses oversampling to reduce aliasing artefacts.

The ParaEQ effect is a parametric equalizer with optional graphic editing of Lowpass/Highpass and Bandpass equalizer stage.

The Flanger is composed of two independent delay lines with feedback for the left and the right channel respectively.
The delay time of both delays is modulated by one LFO with adjustable frequency.
For typical flanging effects the delay time should be below 5 milliseconds.

The Phaser is built from an 8-pole allpass filter, which gives you a very short and frequency dependent
delay time. This delay time is modulated by an LFO.

The Reverb effect is used to simulate the sound reflections off walls in different kind of rooms. This reflections
disperse the sound, enriching it by overlapping the sound with its reflection.
This reverb parameter are accessible by the user:
• Tail delay – Sets the amount of time that elapses between the direct sound and the reverberation tail. This time correlates
with the perceived size of the simulated room. The adjustable range is from 0 ms to 300 ms.
• Reverb time – The time the reverb takes to die away by 60dB after the end of the initial sound. This parameter correlates
with the perceived size of the simulated room. The adjustable range is from 50 ms to 100 seconds.
• Room size – The room size parameter sets the average distance between the reflecting walls.
• Diffusion – The Diffusion parameter controls the echo density of the resulting reverberant sound. A higher value
corresponds to a higher echo density which is in most cases more natural sounding.
• Absorption – The Absorption parameter simulates the surface and air absorption of high frequencies. Due to absorption the reverberation time is shorter for high frequencies than for low frequencies. With higher absorption high frequencies will decay much faster.
• Tail stereo – Adjusts the stereo image width of the reverberation tail.
• Tail cutoff / tone – Lowpass and Highpass filter for the reverb tail.


Summary of features:

• Seven studio quality audio effects
• AudioUnit for AUv3 compatible hosts.
• Inter-app audio compatible effect.
• Audiobus 2 compatible with state saving.
• Apply multi effect to any song in your iTunes library.
• Low latency live usage with mic and headphones.
• Audio recorder
• Ableton Link compatible.

Get AudioEffX

Crystalline Shimmering Reverb For iPad
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Crystalline is a shimmer reverb/delay effect for Audiobus and Inter-app audio. Create synth-like tones and textures from almost any sound source, perfect for guitar, vocals, synths, sound design and more.

Guitarists can plug their instrument into an audio interface such as the Apogee Jam and get the elusive shimmer reverb tone they’ve been searching for.

Crystalline is capable of a wide range of sounds, including classic “shimmer” effects from the 80’s, unique pitch shifted delays and lush reverbs. Crystalline is a highly creative and unique effects processor.

Crystalline features two distinct modes:

● PERFORM mode is focused around four XY touch pads. Touch to control DELAY TIME, FEEDBACK, REVERB and LOW PASS independently for left and right channels.

● TWEAK mode features large expressive sliders and additional effect parameters, allowing you to fine tune your sound.

In addition to Audiobus and Inter-app Audio support, Crystalline can also process external instruments such as guitar, voice and synths by connecting a microphone or professional audio interface such as the Apogee Jam, ONE, or any iOS compatible USB audio interface.

● requires iOS 7.0 or later
● iPad Mini/iPad 2 or newer
● Audiobus 2 compatible (Effect, Input, state saving)
● Inter-App audio compatible (effect node)
● compatible with USB audio interfaces


● Control Left and Right channel delay time, feedback, reverb and more.
● 16 delay modes for a wide variety of pitch shifted delay effects
● Multiple stereo output modes including Wide Stereo, Cross Feedback, Stereo Tremolo and Sum to Mono.
● Huge range of ambient sound effects possible, from beautiful shimmering reverbs to dissonant, metallic delays.

Crystalline works with just about any professional iOS compatible USB audio interfaces. Here is a list of interfaces that have been tested and verified to be compatible:

● Apogee Jam
● Apogee Mic
● Apogee ONE for iPad/Mac
● Apogee DUET for iPad/Mac
● Apogee QUARTET for iPad/Mac
● iConnectMIDI2+
● iConnectMIDI4+
● iRig
● iRig HD
● iRig iMic
● Focusrite Scarlett series (*requires USB hub)
● Alesis io2
● Alesis IO Dock
● Behringer UCA202
● many more

Crystaline is available for $4.99

  • iPad Loops is a music app blog dedicated to exposing the best iPad apps for iOS musicians, producers, and Djs. This is not a database of every app. It is, however, one of useful recommendations from someone with many years in music production. I try to update it on a daily basis (ok sometimes every two days) and I do my best to post useful apps only. My name is Jason Donnelly (Dj Puzzle). You might know me from my royalty free loop packs and sound design. Some of the apps that contain my loops are Retronyms AudioCopy, LP-5, iPRO.DJSAMPLER, Looptastic, and Audio Elements. My work is published by Magix Soundtrack Loops, Sample Logic, Pakotec, Loopmasters, Acoustica, Xmix, Sound Trends, and many more. Subscribe to our RSS feed below to get updated when new apps are posted.


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