FilterMorph AUv3 Audio Plugin vs NuRack Auv3 FX Processor
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FilterMorph AUv3 Audio Plugin
This audio effect plugin offers a unique approach to filtering, allowing seamless morphing between different filter types. It integrates with DAWs and provides advanced control through touchpads and modulation.
- Transitional filter morphing
- Dual touch-pad parameter control
- Real-time and beat-synced automation
- Integrated overdrive and tape delay
- Configurable modulation section
- Preset management
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This is a AUv3 compatible audio effect which can be used as plugin with your favourite DAW such as Cubasis, Meteor, Auria or GarageBand and NOT a standalone app. It supports a modern graphical interface and presets with stereo meters for monitoring signal levels. The FilterMorph is one of our most fun, interesting, experimental and yet incredibly useful AUv3 plugins to date. It takes the concept of a traditional audio filter and pairs it with overdrive, bit crunching and tape delay to perform some incredibly neat real-time or beat synced automation effects. At the heart of the effect are a set of transitional filters (low pass, high pass, band pass, notch and formant filter) which you can assign to the Cutoff Control. The twist here is that you can assign different filters to each end of the frequency spectrum and morph between them to achieve a much more interesting results. So for example you can use a LP filter for low frequencies and a BP filter for high frequencies, and the frequency dial will smoothly transition between the two. The main interface of the effect scrolls to reveal a set of two finger touch-pads, each of which responds to one of more fingers. Each pad can be assigned two of several parameters, one to the vertical axis, and the other to the horizontal. This allows you to control up to 4 knobs in real-time using only two fingers. A glide control allows you to control the rate of change so you can create those gentle sweeps without the effort. But it doesn't stop there... we also include effects such as overdrive, bit shifter and tape delay and these parameters can also be freely assigned to the finger pads. A configurable modulation section also allows you to automate panning or vibrato and assign various envelope shapes. Hold multiple fingers down on a pad and the play cursor will fly between your fingers at a specified speed. Press the HOLD button and you can then release your fingers and have them playback a set pattern. Press the SYNC TO BEAT button and the play cursor will move from one point to another at set beat intervals. Use the FOLLOW feature to follow finger movements etc. The build in Tape Delay allows control over delay time, feedback and level, but the advantage of this type of delay is you get the warping pitch shifting effects as you change the delay time. This allows for some very interesting effects, especially when applied to strings or held chords. This is an essential tool for those wanting to add a creative or experimental twist to any form of electronic composition, adding a few extra dynamics into your mix with very little effort. This is one of a suite of AUv3 compatible plugins which will also soon be available from 4Pockets.
NuRack Auv3 FX Processor
Design custom audio and MIDI effects racks with over 80 building blocks. Route audio in series or parallel and create unique interfaces for your sound processing needs.
- Design custom effects racks
- Over 80 audio and MIDI building blocks
- Full routing control (series/parallel)
- Customizable interface builder
- Seamless effect switching
- 3 independent audio racks mode
- Extensive automation options
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NuRack is an AUv3 based multi-channel audio and MIDI effects processor with a difference, it actually allows you to design your own custom effects using the 80+ building blocks provided. You have full control over routing which allows you to create complex audio paths in series or parallel. You can choose whether to use the stock interface or create your own custom interface using the built in Interface Builder which allows you to concentrate your audio components into a single customized effect. NuRack can run in one of two modes. The first providing 3 customizable effects racks which can be switched (manually or via MIDI), providing seemless switching (i.e. delay trails linger whilst another set of effects are faded in). The second mode allows you to route audio through 3 independent audio racks. A generaous number of over 80 audio and midi building blocks are provided covering 12 different categories of effects. Here are just some of those included in NuRack: Modulation Effects: Chorus, Flanger, Phaser, Tremolo, Vocal Doubler, TalkBox, UniVibe, Leslie & Vocoder. Time Based Effects: Stereo Delay, Tape Delay, Reverb and Reverse Delay. Spectral Effects: Parametric EQ, Graphic EQ, PitchShift, Auto-Pan, Bit-Crusher, Tube Overdrive, Distortion, Harmony, Harmonic Exciter and SlowMo. Dynamic Effects: VelocityControl, Compressor, Multi-Band Compressor, Noise Gate, Gate, and Limiter. Filter Effects: MultiFilter, LP/HP Filter, Frequency Splitter, MultiBand Splitter, Classic Filters, Formant Filter, Ring Modulation and Shelf Filter. MIDI Effects: MIDI Harmony, MIDI Velocity, MIDI Randomizer, MIDI Monitor, MIDI Mixer, MIDI Pads, MIDI Control, Strummer, MIDI Recorder, MIDI Modulation, MIDI Remap, CC Monitor, CC Generator, PitchBend, MIDI Time Clock, and ChordToMidi. Generator Modules: Noise, Audio Clip Launcher, SoundFont Player, Virtual Flute, Virtual Clarinet, Virtual Brass, FM Organ, FM Rhodes and Analog Sawtooth Synth. Automation: TouchPad, AutoMate, Pattern Automation, and Visual LFO. You also provide the ability to split and combine audio signal using splitters and mixer modules as well as a number of visual elements such as VU Meters, LED Meters, Scopes, Graphs etc. Some effects such as phaser and flanger are usually controlled by an LFO, but this can be detached and automated remotely. There are a number of modules that allow auomation based on direct touch (X/Y Pads), Visual LFO, Pattern Automation, MIDI input (CC data), or peak/rms level detection. These automation modules can remotely control knobs and sliders throughout your rack. Simply create a new rack and start adding modules to it. These modules are generally wired up automatically but these connections can be manually routed. Once you have your sound as you wish you can use it 'as is', or switch to Interface Builder mode where you can combine all your modules into a single interface. Elements can be dragged, dropped, resized and coloured as required. Add your own labels, image logos and custom backgrounds before saving your custom component. Use the X/Y Pad to control your modulation effects by detaching their LFO's. Use MIDI CC data to automate knobs. Use the velocity of an incoming signal to control the cutoff/resonance of a filter (wah) or volume level of a gain control (swell), as NuRack expands, so do the possibilities. Features: ○ Over 80 categorised modules. ○ 3 Input / Output busses supported. ○ Audio & MIDI effect. ○ Lots of audio & MIDI automation options. ○ Seemless transition between racks. ○ Manual audio path routing. ○ Open in presentation mode (auto hides controls). ○ Interface Builder to customize your rack. ○ AUv3 plugin runs in MIDI and none MIDI mode. ○ Add your own Text/Heading and Image/Logos and backgrounds to your design. ○ Compatibility options for DAW's not supporting multi-channels. ○ Dark/Light Modes Checkout the YouTube channel 'Paul the MusicMan' for demos and tutorials of NuRack.
Screenshots
Verdict
The clearest difference is rating: NuRack Auv3 FX Processor at 4.7 against FilterMorph AUv3 Audio Plugin's 4.2. NuRack Auv3 FX Processor also leads on update cadence (every 3 weeks vs every 3 months) and ratings volume (41 vs 5). FilterMorph AUv3 Audio Plugin's advantage is price ($5.99 vs $12.99) and review sentiment (100% vs 84%). On ads, in-app purchases, monetization model and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
FilterMorph AUv3 Audio Plugin costs $5.99 and NuRack Auv3 FX Processor $12.99 up front. Neither carries in-app purchases, so what you see is what you pay.
NuRack Auv3 FX Processor holds the better App Store score, 4.7 against 4.2. That said, the two scores are not equally well evidenced: NuRack Auv3 FX Processor has 41 ratings behind it against 5, so its average is the more settled of the two. Written reviews complicate that: 100% of FilterMorph AUv3 Audio Plugin's written reviews are positive against 84% of NuRack Auv3 FX Processor's, so the app with the better star average is not the one people write more warmly about.
FilterMorph AUv3 Audio Plugin ships an update every 3 months, NuRack Auv3 FX Processor every 3 weeks. The most recent releases landed on October 20, 2026 and October 25, 2026 respectively.
| Parameter | FilterMorph AUv3 Audio Plugin | NuRack Auv3 FX Processor |
|---|---|---|
| Price | $5.99 — better | $12.99 |
| Rating | 4.2 (5 ratings) | 4.7 (41 ratings) — better |
| Positive reviews | 100.0% of reviews — better | 84.4% of reviews |
| Number of ratings | 5 | 41 — better |
| Update frequency | Every 3 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13 | 13 |
| Further details — not scored | ||
| Size | 9 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | 4Pockets.com | 4Pockets.com |
Customer experience
FilterMorph AUv3 Audio Plugin
NuRack Auv3 FX Processor
In-app purchases
FilterMorph AUv3 Audio Plugin
No in-app purchases
NuRack Auv3 FX Processor
No in-app purchases
Questions
Is FilterMorph AUv3 Audio Plugin free?
Is NuRack Auv3 FX Processor free?
Which has better reviews, FilterMorph AUv3 Audio Plugin or NuRack Auv3 FX Processor?
Do FilterMorph AUv3 Audio Plugin or NuRack Auv3 FX Processor have ads?
Which is updated more often, FilterMorph AUv3 Audio Plugin or NuRack Auv3 FX Processor?
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