Yonac 13th anniversary sale.
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Happy anniversary Yonac! 13 years ago they announced their very first synthesizer for the iPhone called Mini Synth. I’ve been a supporting fan since then and I’ve published and shared their news over the years so I’m very excited about this anniversary as we have lost some great apps and developers over the years. Not only that I’ve used their apps in my professional video game scores so as you can tell I have a very deep connection with their apps. All their apps are currently on sale for .99 cents and bundles are 75% off.

Check out their apps in the appstore today! https://apps.apple.com/us/developer/yonac-inc/id288670023

I really love Tonestack in fact I used Tonestack on my guitars when I scored the soundtrack for the Zombieland 2 Double Tap Road Trip video game. This video game is available for Switch, PS4, Xbox, and Steam. You can hear some of my music from that in this walkthrough

I also really love their guitar synth Roxsyn. You can hear some of my favorite presets here:

But honestly all of their apps are really great and their synths are super powerful so go on and check them out in the appstore and grab some deals!

Yonac Roxsyn Guitar Synthesizer
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Yonac Roxsyn Guitar Synth

Introducing a revolutionary new way to turn your guitar or bass into a fully featured polyphonic synth: Roxsyn, the world’s first metamorphic guitar synthesizer. Expressive, fast and responsive to every nuance, it is a league apart from all other guitar synths to date.

Unhappy with cold and temperamental guitar-to-MIDI synths that dominate the market, we developed a completely new approach to guitar synthesis. Our all-original technology synthesizes your guitar directly, without the use of MIDI notes. Rescued from being a poor keyboard substitute, your guitar suddenly becomes an integral part of the synth. It’s alive!

There is no pitch tracking involved. There are no pitch estimation errors, octave glitches, or garbled chords. There is no over-complicated G2M between your guitar and synth to destroy everything human about your playing. Instead, Roxsyn’s metamorphic sound generation technology retains all the personality of your sound: vibrato, slides, bends, dynamics, even extended technique. The result is a polyphonic synthesizer that is as fast and accurate as it is richly expressive.

No need for special MIDI pickups or hardware, either: just plug into your favorite Lightning/USB audio interface, and start synthing!

::Powerful Synth Engine::

Roxsyn’s big synth heart is its three metamorphic signal generators (AKA oscillators). Each generator offers 5 unique waveforms, and has a 4+ octave range to cover a wide spectrum of frequencies. They also feature stereo panning, and can route into either of Roxsyn’s dual filter banks. You can even dial in your guitar directly into the synth engine for even bigger sounds.

::Dual Filter Banks::

Each containing four custom virtual-analog filter types and dedicated envelopes, the filter banks help sculpt the synth generators in countless new ways. The envelopes are specially designed for the guitar, and are driven by a fully adjustable automatic trigger generator controlled by your playing dynamics. Envelopes offer original features like finite-duration sustain stages, as well as the ability to receive or ignore trigger-off messages. They can also be triggered externally via MIDI controllers like an expression pedal.

An additonal envelope controls the amplitude of the signal, giving you even more options in creating synth sounds.


Instantly transform sustained guitar notes into fast (or slow), complex patterns with Roxsyn’s powerful yet easy to use arp. There are 8 stepping algorithms to choose from, as well as settable note value, swing, and note repeats. You can even route the arp to any combination of the 3 voice generators — enabling you to layer a non-arpeggiated sound with an arp pattern. What’s more, the arp can send trigger signals into any of Roxsyn’s 4 envelopes, and even reset the LFOs. So it’s also a handy rhythmic / trance tool as well!

::Modulation & FX::

Roxsyn’s user friendly modulation matrix lets you manipulate parameters (pitch, amplitude, filters, etc) using its two LFOs and mod envelope. Add subtle vibrato, even glide simulation, or go full-on berserk. LFOs each have 9 waveforms, and feature beat syncing. Each matrix row can take LFOs or the mod envelope as a modulator or control, and can even use external control sources.

And if you like your synths on the spicy side, Roxsyn comes with top-notch stereo FX specially developed to evoke extra synthiness: Powerful algorithmic reverb with the sound of countless rooms, phasing, modulating, 2-channel delay, and graphic EQ.

::Pro Features::

500+ factory presets with bass, lead, pad, arp sounds & more. Easily create & share your own presets. Audio Unit v3, IAA, Audiobus, Ableton Link. 64-bit processing at up to 96kHz. 160+ MIDI controllable parameters; MIDI learn & map save/share. Tapedeck (in the app), so you can record, loop & share your ideas on the go. Just some of Roxsyn’s professional features that make life and music a little bit easier.

Get Roxsyn HERE

Best Organ For iOS Galileo 2
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Best Organ For iOS Galileo 2

Meet Galileo Organ 2: the next generation in tonewheel and transistor organ modeling! Benefiting from completely redesigned physical modeling techniques, offered as a UNIVERSAL app with a built-in AUv3 plugin, and presenting many new parameters, Galileo Organ 2 is the culmination of our adventure into recreating that perfect analog organ sound.

With 17 different organ types, three individually configurable manuals, scanner vibrato/chorus emulation, newly designed rotary cabinet & tube amp sims, as well as many new fully-stereo professional FX, Galileo Organ 2 is able to achieve sounds more authentic and diverse than ever before!

Designed for the professional, Galileo Organ 2 offers extensive MIDI support, full connectivity via AUv3, IAA and Audiobus, over 300 presets in many different genres, as well as the ability to import original Galileo Organ presets. The best organ on iOS just got way, way better!

Organ Engine

• Brand new tonewheel organ modeling engine, faithfully recreating all the unique characteristics of these legendary instruments
• 17 organ types, including many tonewheel and transistor models
• 3 independently configurable organ manuals: upper, lower and pedal
• Scanner vibrato/chorus emulation
• Percussion w/ fine-tunable amplitude, length, drawbar loss, dual velocity control & poly/mono engagement
• Realistic keyclick with separate on/off and pedal levels, tone & velocity control
• Adjustable drawbar & tonewheel leakage
• Each manual w/ independent volume and pan, as well as attack, release & brightness
• Bass foldback option
• Pre-FX (Organ) and Post-FX (Master) volume controls
• 64-bit super high fidelity DSP
• Virtually no-latency audio generation with lightning-fast response
• Many new parameters that allow modifying practically any aspect of the organ tone, and help recreate many unique individual organs associated with famous musicians, or your own unique instrument.

Fully Stereo Effects Custom Designed for Galileo Organ 2

• Highly authentic rotary cabinet & tube amplifier simulations using our latest modeling technologies
• Rotaries include configurable fast/slow rates, rotor inertia, multiple drum modes, speaker balance, stereo spread & more
• 6 stereo FX bundled free with Galileo Organ 2: Class-A tube inspired preamp, rotary box, delay, reverb, wah and ring mod
• 10 professional, studio-grade FX available as IAP upgrades, including tube & rotary amps, spring reverb, studio reverb, delay, modulations & more
• User-friendly FX signal chain paradigm: use up to 8 FX simultaneously, including multiple instances of the same unit. Drag and drop to change signal order.


• Dedicated arp for each manual
• 11 arp algorithms
• Settable note value & gate
• Live, Program & Fixed Prog modes


• AUv3 – use as Audio Unit plugin on iPad & iPhone
• Fullscreen AU mode in compatible DAWs & iOS versions
• Extensive MIDI: MIDI learn, aftertouch, MIDI CC map save/share, KB mapping, program changes & more
• Inter-App Audio
• Audiobus 3
• Ableton Link


• Universal
• Fullscreen control mode for live use
• Powerful YPAT2 preset management system
• Can import presets from the original Galileo Organ
• Classic or ribbon key controller
• Ribbon controller: Poly aftertouch into Galileo Organ 2
• Ribbon controller: Settable musical key & scale
• Classic KB: Velocity w/ sensitivity setting
• Tapedeck: Record, loop, copy/paste & share
• Metronome
• Tap BPM

Supported Systems

• iOS 10 & newer
• iPad Air, iPad Mini 2, iPhone 6, 6 Plus, & newer

Get Galileo 2

Yonac Kauldron Synthesizer For iPad
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Kauldron is our warmest sounding, punchiest synth yet! A completely new modeling technology, combined with carefully designed features help you create aggressive synth sounds full of rich analog textures with the fewest knob tweaks. The result is a pure, head-on tone that requires little or no FX or post-production to sound big.

Kauldron pushes every available iOS technology to the max: it is not only fully universal (you can run it natively on your iPad and iPhone), but also an Audio Unit plugin. In fact, it is one of the first fullscreen AUv3 plugins for iOS: with iOS 11 and a compatible DAW, you can enjoy all the great Kauldron features on a nice, big spread.

Kauldron debuts the next generation of our Artificial Intelligence preset creation system, SPAWN². Completely reimagining the groundbreaking SPAWN algorithms in our hugely popular Magellan, the new SPAWN² gives you unprecedented control over generating presets. In the expert mode, you can accomplish anything from subtle ‘variations on a theme’ to bold new sounds. In the basic mode, where Kauldron does all the thinking, you get preset after usable preset with just a touch. This is not simple randomization: it is the power of machine learning put to benevolent use!

Kauldron is designed with modulation and fine dynamic control in mind. The two fully-featured LFOs and the mod envelope combine with a wide variety of MIDI learnable controls to manipulate multiple parameters. Everything is easily set up in a clearly laid out ‘mod matrix.’ The dual XY-pads can be used for controlling modulation or a wide range of synth parameters. MIDI aftertouch can be routed via the matrix for even greater control over expression and tonality.

Powerful arp with both live & program modes; comprehensive MIDI features with effortless MIDI learn; over 900 presets; recording, sharing, IAA, Audiobus 3, Ableton Link — these are just some of the features brewing inside Yonac’s Kauldron.

Selected Specs


• 3 analog modeling oscillators w/ multiple waveforms & true PWM
• FM via Osc 2
• Maximizer module with drift, spread & voice count for huge, stereophonic all-synth sounds
• New vAnalog filter design w/ ‘dirt’ overload for even warmer, harmonically complex tones
• Dedicated filter ADSR envelope
• Filter tracking, contour & more
• Pink/white noise generator
• Osc. phase reset & sync
• Retro & modern glide algorithms
• Virtual VCA envelope with 2 attack types
• Poly/mono operation
• Legato mode for buttery smooth passages
• Extensive modulation options via the ‘mod matrix’
• 2 LFOs w/ BPM sync, keytracking, trigger mode & more
• Assignable mod envelope
• 23 mod targets
• 11 mod controllers, including aftertouch, velocity & keytracking
• 2 XY-Pads for controlling mod targets or synth parameters
• Arpeggiator with live & program modes, 11 algorithms, gate, swing, note value, octaving & more
• Stereo mod effect with chorus & flanger modes
• BPM-syncable stereo delay
• Studio quality reverb w/ 7 room types, damping, time & mix
• 900+ presets in a wide variety of styles & sounds


• Automatic preset generation via artificial intelligence
• Generate infinite new, usable presets at the touch of a button
• Expert mode lets specify Variation & Autonomy for each major synth module
• 3 unique A.I. algorithms
• Auto arp programming in any listed scale


• AUv3 – use as Audio Unit plugin on iPad & iPhone
• Fullscreen AU mode in compatible DAWs & iOS versions
• Extensive MIDI: MIDI learn, aftertouch, MIDI CC map save/share, KB mapping, program changes & more
• Inter-App Audio
• Audiobus 3
• Ableton Link


• Universal
• Powerful YPAT2 preset management system
• Classic or ribbon key controller
• Ribbon controller: Poly aftertouch into Kauldron
• Ribbon controller: Settable musical key & scale
• Classic KB: Velocity w/ sensitivity setting
• Tapedeck: Record, loop & share
• Metronome
• Tap BPM

Supported Systems

• iOS 10.3 & newer
• iPad Air, iPad Mini 2, iPhone 6, 6 Plus, & newer

Get Kauldron

Yonac Kaspar Synthesizer For iPad
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Harness the enormous power of 8 polyphonic synths: meet KASPAR Supersynthesizer! Featuring our cutting edge Multi-Engine Automorphing SuperSynthesis technology, KASPAR is a gigantic machine. A total of 24 oscillators, 8 filters, 8 arps; extensive morphing, automorphing, and layering abilities; a powerful modulation system; poly aftertouch; 2 FX Busses filled with fully stereo Yonac effects — just a few of the amazing features of this behemoth synth!

KASPAR comes with tons of pro features. In addition to extensive MIDI capabilities, Inter-App Audio, and Audiobus, it also works as an Audio Unit plug in. Just fire it up in GarageBand or your favorite DAW for even more KASPAR goodness.

***ON SALE! Special Intro Price for a Limited Time***

Top Notch Sound Generation

• 8 fully-featured polyphonic synth engines, each with,
— 3 oscillators (24 systemwide total!)
— Over 20 unique waveforms per oscillator
— Special 6-stage ‘dADSHR’ envelopes
— 14 types of filters to choose from
— Dedicated filter envelope
— Arpeggiator with multiple modes
— Chordmaker – easily program & play chords by touching a single key
— Powerful modulation features (see below)

Extensive Modulation

• Each synth has a dedicated mod assign matrix with 6 slots
• 20 mod targets to choose from, including pitch, timbre, filters and more
• Each target can be modulated by a continuous signal, as well as a control signal
• 2 LFOs per synth
• Modulation envelope
• Poly aftertouch
• Velocity, Mod Wheel & Key Tracking


• 4 morph groups with onscreen control pad
• Automorphing: simply draw a figure on the pad and KASPAR automatically tracks it
• Modulate the morph using the x- and y-controls
• 6 automorph trigger modes
• 4 automorph looping modes
• Adjustable, beat-syncable pathread & modulation speeds


• Combine the 8 KASPAR synth engines in infinite ways
• Each synth comes with dedicated volume and panning, as well as FX1 & FX2 send controls
• Conveniently map the synths to regions of the keyboard: great for ‘splitting’ or ‘layering’ multiple synth patches
• Each engine has its own transpose & drift controls, as well as adjustable pitch bending, velocity, and aftertouch ranges

Professional FX

• Two independent FX busses
• Each bus contains 8 state-of-the-art stereo FX specially designed for KASPAR
• Simply drag-and-drop to change FX signal flow
• FX include:
— Analog-modeling compressor
— 6 band parametric EQ with 9 filter options per band
— Stereo chorus with 10 parameters
— Stereo phaser
— Stereo flanger
— Amplifier with 4 virtual circuit types and 4 cabinet types
— Stereo delay with BPM syncing
— Algorithmic reverb with 14 parameters

Professional Features

• Standalone app features Inter-App Audio, Audiobus, and Ableton Link
• Comes packaged with FREE Audio Unit plugin, with native processing at any standard sample rate
• Crystal clear, super high quality audio generation
• Virtual ribbon control with polyphonic aftertouch, as well as classic keyboard
• Virtual KB velocity with adjustable sensitivity
• Extensive MIDI Learn options
• MIDI Maps manager with MIDI CC profile saving
• Over 300 high quality presets, including an exclusive bank by New Wave Presets
• Powerful preset management system: save, share & edit presets

System Requirements

• Recommended for iPad Air, iPad Pro, iPad Mini 2, or newer

Get Kaspar


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  • 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 Synth One, EG Segments, Hammerhead, Retronyms AudioCopy, LP-5, iPRO.DJSAMPLER, Looptastic. My work is published by Roland, Antares, Magix, Soundtrack Loops, Sample Logic, Acoustica, Loopmasters and many more. Subscribe to our RSS feed below to get updated when new apps are posted.

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