Here are this weekend’s bunch of price drops from 4Pockets, ending October 14th.
- PolyPipe: – $14.99 to $7.99
- Oscidia – $14.99 to $7.99
- Chameleon – $12.99 to $7.99
- RingsFX – $14.99 to $7.99
PolyPipe
PolyPipe is an AUv3 MIDI Sequencer plugin for iOS which can be loaded into your favorite DAW. It comprises elements of some of my favorite sequencers of all time, all rolled into a single interface.
PolyPipe is a multi-lane, polyphonic sequencer designed for creating evolving musical patterns rather than fixed, repetitive loops. Instead of thinking in terms of a single step sequence, PolyPipe lets you build multiple independent lanes, each with its own rhythm, pitch logic, octave behavior, probability, and modulation data all running together as a coherent musical system.
At its core, PolyPipe takes incoming MIDI notes (or internally generated notes) and uses them as a musical “seed.
These notes are then processed through patterns, scales, transposition rules, and step logic to generate new musical phrases in real time. This makes it especially suited for generative music, complex arpeggiation, bass-and-chord splitting, and long-form evolving sequences.
Each lane in PolyPipe is its own sequencer voice. A lane contains one or more patterns, and each pattern is made up of steps. Steps don’t just define when a note plays they can also define how it plays. A step can include pitch offsets, velocity, gate length, strumming, probability, repeats (ratchets), ties for legato behavior, and even chord information.
Patterns can be enabled or disabled independently, shifted by octaves, and combined with global transposition. Because lanes can have different lengths, directions, and step modes, the resulting sequences naturally phase against each other, creating variation without manual intervention.
PolyPipe applies musical logic at the MIDI output stage rather than hard-coding notes upfront. Pitch values can be forced into a chosen scale and key, allowing even highly experimental patterns to stay musically coherent. Different step modes (such as forward, backward, ping-pong, random, chord, bass, or hybrid note/chord modes) let each lane behave differently, from traditional arpeggios to controlled chaos.
PolyPipe Sequencer is built for musicians who want to explore ideas quickly, create unique patterns, and discover results they wouldn’t think to program manually. It rewards experimentation: small changes to probability, repeats, or step logic can dramatically alter the musical output while staying rhythmically locked and musically usable.
Oscidia
Oscidia is an AUv3 plugin for iOS which can be loaded into your favourite DAW allowing you to use it as a sound source for any MIDI source. Its wide range of features and oscillator types allow it to produce a vast variety of sounds. In particular, the inclusion of Wavetable greatly expands the traditional wave types and brings a wealth of modulation options. Oscidia has 3 oscillators per voice, and each oscillator can be a different wavetable – all working and morphing together to create some incredibly amazing sounds.
Oscidia includes SINE, SAW, SQUARE, TRIANGLE, SUPERSAW, SUPERSQUARE, WAVETABLE and ADDITIVE wave types. You can import and export compatible wavetables using drag and drop directly to the Wavetable manager. Wavetables support morphing and warping (phase distortion), all controlled by the Mod Matrix routing. The SINE and TRIANGLE wave types both support several wave folding modes which allow dramatic real-time morphing too.
Oscidia supports 5 filter types which support 12/24dB modes and morphable LP/BP/HP filter modes which can be automated from the Mod Matrix or via the Sequencer. The sequencer itself is very unique and allows up to 3 simultaneous ARPs to play at the same time. Each ARP can directly control the 3 oscillator levels independently per step, as well as the pitch, filter morph, cutoff frequency, probability, gate, note repeat and ties. This allows for complex rhythms to be created that are not tied to pitch
Chameleon
Chameleon is an AUv3 compatible sampler instrument plugin for your favourite DAW.
The program can run as a standalone app in order to record audio samples from the internal microphone or professional audio interface. It also supports incoming Inter-App Audio connections for sampling directly from other iOS applications, however it is primarily intended to be used as an AUv3 Instrument plugin for applications such as Cubasis, AUM, Auria, Meteor, Gargeband etc. The plugin can additionally be loaded as an AUv3 effect in order to record audio passing through it from other AUv3 Instrument sources, which makes it a very versatile and useful tool.
So what is a sampler? A sampler is a device that allows you to imitate other instruments with just a few short audio snippits. Although it comes with a library of presets it also allows you to create your own. You do this by recording multiple audio clips and mapping them to the notes on a MIDI keyboard and Chameleon does the rest using a sophisticated pitch shifting algorithm to fill in the blanks. Recorded samples can either be layered or mapped freely over a 7 octave range and saved as individual presets. Presets are then organised into custom categorised banks which can be exported and shared with others.
Just think, you can sample all your favourite synth sounds and carry them around on your iPhone/iPad without the inconvenience of lugging heavy gear around with you. Sample anything from musical instruments to vocal snippits, drum machines or ambient noises. The possibilities are endless.
Recording is incredible easy. Just create a New Patch and press record. Chameleon will wait for you to play a note before recording begins. Once recorded press the LEARN button and tap the note range on the virtual or MIDI keyboard to map the sample. Repeat this as many times as required, tweak the settings and save your patch. Additionally you can setup loop points with the ability to apply crossfade. If all that sounds too complicated, just press auto sample and let Chameleon do all the sampling for you.
Chameleon also has a quite sophisticated arpeggiator which allows you to create complex mixtures of notes and chords with glide, hold and re-triggering options.
On board reverb, digital delay and chorus effects are available to give your samples a more polished touch. We also include 4 touch pads for quickly dialing in on a sound or for easy effect automation. Configurable touch ADSR and modulation options are available too.
Chameleon can also import audio samples using iOS Files integration or you can make use of Copy / Paste to quickly drop one of more samples into a patch. You can also freely edit samples using the built in tools such as normalise, fade in, fade out, crop, clear options etc.
You can run Cameleon as a standalone app and map external MIDI keyboards (Bluetooth MIDI support also included) and perform audio sampling outside of your DAW. This is provided for convenience since you can’t record input when hosted as an AUv3 Instrument plugin.
Yes some DAW’s have built in samplers which only have the ability to playback libraries provided with the software. Chameleon allows you to built your own libraries of sounds and share them with others. There’s a budding rapper in you dying to get out and we have just the tool!
RingsFX
RingsFX is an AUv3 plugin based on the famous Mutable Instruments Rings, one of the most dedicated and fully-featured Physical Modelling Eurorack modules ever created. At its core is a resonator that needs to be ‘excited’ or ‘strummed’ by MIDI input, noise, or external audio excitation.
RingsFX emulates vibrations of structures simulated by 3 different synthesis techniques that can be plucked or process external signals: Modal Synthesis, Sympathetic Strings, and Inharmonic Strings. Traditionally, Rings was only monophonic but used a unique approach to polyphony that allowed the previous note to ‘ring’ out and decay while a new note was played. Rings FX provides these same modes (Mono, Duo, and Quad), but expands it with a true Polyphonic mode. RingsFX also expands the capabilities of the original engine by adding support for velocity sensitivity and MIDI MPE mode.
The new polyphonic mode allows RingsFX to play up to 12 notes of true polyphony, depending on the settings. Doing so requires RingsFX to use multiple Rings resonators, but the more polyphony you use, the more processing power it requires.
RingsFX has 7 modes in total, by combining the 3 basic modes with additional properties such as western chords and specially tuned reverbs. The original hardware also featured a secret ‘Easter Egg’ mode, which in RingsFX is simply calling ‘Synthesizer’ mode, rumoured to be based on one of the early Korg synthesis methods. This mode supported several mutable effects which now work on in all resonator modes.
RingsFX also has a Mod-Matrix which allows you to combine the built-in LFOs and FEGs to great effect by manipulating parameters and mutable effects in real-time. Star of the show is a unique pulse sequencer which can be used to generate dramatic rhythms and modulation of controls.
Finally, RingsFX can be loaded as an AUv3 effect plugin. Set the Exciter Source to ‘INPUT’, and you can pass any audio through RingsFX and use this audio as an external exciter. For example, it can be used to great affect on a drum beat to create some crazy rhythms. Use the Output Mix to combine the original audio with the synthesised resonator output to create some stunning effects.
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