AudioLayer vs NuRack Auv3 FX Processor
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AudioLayer
This app is a powerful mobile multi-sampler for music production, offering advanced features for creating and manipulating complex instruments. It integrates seamlessly with iOS production environments and supports iCloud for easy collaboration and storage.
- Streaming Sample Engine (SSE)
- Hierarchical Layer and Zone editing
- Seamless Instrument Switching (SIS)
- Integrated audio sample recorder
- Auto Sampler for hardware synths
- AUv3 AudioUnit integration
- iCloud storage and collaboration
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AudioLayer satisfies the most sought after gap for contemporary music production on iOS devices. AudioLayer is a full featured open standard audio multi-sampler pushing the boundaries beyond what has been available even in the desktop music production worlds. And all this integrated in all relevant iOS production environments especially the emerging AUv3 AudioUnit standard. - SSE - Streaming Sample Engine - The ultra efficient Streaming Sample Engine SSE is capable of playing hundreds of voices of big multi-sampled instruments even in strictly resource limited applications like using multiple instances of AudioLayer in AudioUnit host environments. Innovative features like Sub Sample Looping for perfect loops even in the audible range extend the range of applications even further. - Multiple storage options - The consequent usage of the open file structure of the Files app makes organising even large sample libraries a breeze. Sample recordings and Instrument designs made with AudioLayer are seamlessly available across all your devices and desktop using either iCloud storage or external SSD. The iCloud option opens up new forms of collaborations with musicians all around the world to share your creations and work together. - Multi Scope Editing - To support the creation of complex multi-sampled instruments AudioLayer allows you to use a hierarchical structure of Layers and Zones each with it’s own sound manipulation parameters. A unique element of AudioLayer is the possibility to decide for each Zone at which Scope level your editing apply: For the all Zones in the Instrument, for the Layer only or individually for this Zone only. This opens a whole new world of creative options for sound mangling. For sound manipulation you can use a full set of Filters, Envelopes and LFOs to shape the pitch, timbre and level of the sound of each Zone. SIS - Seamless Instrument Switching The unique architecture of the Streaming Sample Engine allows for instant loading of even complex instruments and makes this switching from one Instrument to the next without cutting off the sound! And this includes of course also different effect settings - Easy Design Workflow - The built in audio sample recorder let you create Instruments on the fly in seconds. The Music Effect AudioUnit / Audiobus effect plugin of AudioLayer let you record multi-samples semi automatically directly inside your preferred host and instantly create an Instrument with the help of several Auto mapping options available. This includes file name based mapping of key ranges and velocities and automatic pitch detection. For the creatives we’ve also integrated a special “Single Cycle Waveform” detector making the use of this special files a breeze. - Auto Sampler feature for easy creation of Sample Instruments from hardware synthesiser. - Versilian Studio Sample Library ( VCSL/VSCO ) with excellent strings and orchestra samples for free download - Exchange libraries with XinematiX App Integration • Stand-alone App • Sample import for EXS24 and SFZ Format • AUv3 AudioUnit Instrument and Music Effect • Inter App Audio • Audiobus 3 Input/Effect with state saving support. • Audio recorder with share function. • Ableton Link compatible.
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 in-app purchases: NuRack Auv3 FX Processor at none against AudioLayer's 1. NuRack Auv3 FX Processor also leads on review sentiment (84% vs 56%) and rating (4.7 vs 4.4). AudioLayer's advantage is ratings volume (179 vs 42). On price, update cadence, ads 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
AudioLayer costs $12.99 and NuRack Auv3 FX Processor $12.99 up front. AudioLayer sells 1 one-off in-app purchase. NuRack Auv3 FX Processor asks for nothing beyond the download.
NuRack Auv3 FX Processor holds the better App Store score, 4.7 against 4.4. Both are backed by a comparable volume of ratings — 179 and 42 respectively. Written reviews point the same way: 56% of AudioLayer's written reviews are positive against 84% of NuRack Auv3 FX Processor's.
AudioLayer ships an update fortnightly, NuRack Auv3 FX Processor every 3 weeks. The most recent releases landed on September 28, 2026 and September 25, 2026 respectively.
| Parameter | AudioLayer | NuRack Auv3 FX Processor |
|---|---|---|
| Price | $12.99 | $12.99 |
| Rating | 4.4 (179 ratings) | 4.7 (42 ratings) — better |
| Positive reviews | 55.6% of reviews | 84.4% of reviews — better |
| Number of ratings | 179 — better | 42 |
| Update frequency | Fortnightly — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Best chart rank | — | #182 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 13 |
| Further details — not scored | ||
| Size | 242 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | Harry Gohs | 4Pockets.com |
Customer experience
AudioLayer
NuRack Auv3 FX Processor
Bugs and requests
AudioLayer
Reported bugs
17 issues- App crashes on startup (splash screen)
- Reverb and chorus effects cause sound to disappear
- Pitch resets to -24 after stopping Logic Pro playback
- Layer voice polyphony controls not working properly
- SFZ batch import distributes samples incorrectly across layers
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- EXS24 import fails for complex instruments (pianos, drum kits)
- MIDI source names display as 'Unknown Name'
- Plugin window resizing required to access all controls
- Sample end marker positioning doesn't work in all view sizes
- Soundfont import module shows as missing despite purchase
- App becomes unresponsive when loading complex instruments
- Control Change 11 (Expression) not received
- Autosampler function button missing after update
- Settings not saved properly as AUv3 plugin
- Instrument loading defaults to first instrument in host
- Click/pop noises in sustain loops
- Inter-Audio (IAA) compatibility broken
Requested features
17 requests- Time-stretching/pitch-shifting capability
- Program Change MIDI support
- Undo/Redo functionality
- GigaSampler .gig library support
- Soundfont SF2 import (now paid feature)
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- MIDI learn for real-time parameter control
- Expression (CC11) and other CC support
- Multi-output support for individual zone routing
- Batch import and file management improvements
- Instrument selection screen persistence in MIDI mode
- Bit reduction effect for vintage sampler emulation
- Better local file management and folder organization
- Modulation wheel pitch control
- Transposition features
- Disk streaming for larger libraries
- Macro/customizable GUI support
- Purge unused samples function
NuRack Auv3 FX Processor
Not enough reviews yet to summarise bugs or requests.
In-app purchases
AudioLayer
- SoundFont Import$3.99
NuRack Auv3 FX Processor
No in-app purchases
Questions
Is AudioLayer free?
Is NuRack Auv3 FX Processor free?
Which has better reviews, AudioLayer or NuRack Auv3 FX Processor?
Do AudioLayer or NuRack Auv3 FX Processor have ads?
Which is updated more often, AudioLayer or NuRack Auv3 FX Processor?
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