Comparison

NuRack Auv3 FX Processor vs MelodyBud Generative Sequencer

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Currently charting
Read full description

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.

About

MelodyBud Generative Sequencer

This app is a powerful AUv3 MIDI sequencer that allows for generative sequencing with randomized notes, velocity, octave, and gate length. It features parameter-locking for individual step customization and supports over 40 scales, with Ableton Link synchronization in its standalone version.

Highlights
  • Generative sequencing with randomization
  • Parameter-locking for individual steps
  • Support for over 40 musical scales
  • Ableton Link synchronization (standalone)
  • AUv3 plugin for hosting in audio apps
Features
Read full description

MelodyBud is an AUv3 MIDI sequencer with great generative sequencing capabilities. Instead of a traditional sequencer, you can randomise your notes, velocity, octave, and gate length of your steps, add ratchets and glide to make it more interesting! One of the most powerful feature of MelodyBud is "parameter-locking". With parameter-locks, you can set a step's randomisation values individually. That lets you create richer melodies. For entering the parameter-locking mode, you can simply tap a step's number on the top of the sequencer. The step and the control knobs turn orange when you enter the parameter-locking mode. If you edit a control when you are in the parameter-lock mode, the sequencer will execute that configuration for that step instead of the global configuration. You can tap the step's number again for exiting the parameter-lock mode. You can work in more than 40 scales, you can even change them while the sequencer is running. With the AUv3 plugin, you can change them with the AU parameters and even modulate/automate them along with other parameters. The standalone version supports Ableton Link which lets you in-sync with other Ableton Link enabled apps. Please note that MelodyBud is a MIDI app. The standalone version has an optional internal synth where you can enable or disable on the settings menu. The AUv3 plugin requires an audio app for output. For the AUv3 functionality, it needs to be hosted within an app such as AUM, Loopy Pro, Cubasis, Logic Pro, Nanostudio, Drambo, or apeMatrix etc.

Screenshots

NuRack Auv3 FX Processor4 screens
MelodyBud Generative Sequencer4 screens

Verdict

The call

The clearest difference is price: MelodyBud Generative Sequencer at $6.99 against NuRack Auv3 FX Processor's $12.99. NuRack Auv3 FX Processor's advantage is rating (4.7 vs 4.4) and review sentiment (84% vs 70%). On update cadence, ads, in-app purchases and monetization model 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

CostPrice · In-app purchases · Ads · Monetization

NuRack Auv3 FX Processor costs $12.99 and MelodyBud Generative Sequencer $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

NuRack Auv3 FX Processor holds the better App Store score, 4.7 against 4.4. Both are backed by a comparable volume of ratings — 42 and 12 respectively. Written reviews point the same way: 84% of NuRack Auv3 FX Processor's written reviews are positive against 70% of MelodyBud Generative Sequencer's.

UpkeepUpdate frequency

NuRack Auv3 FX Processor ships an update every 3 weeks, MelodyBud Generative Sequencer every 6 weeks. The most recent releases landed on September 25, 2026 and September 24, 2026 respectively.

Scorecard5 real differences · 6 level
NuRack Auv3 FX Processor versus MelodyBud Generative Sequencer: the parameters behind the verdict, then further details
ParameterNuRack Auv3 FX ProcessorMelodyBud Generative Sequencer
Price$12.99$6.99 — better
Rating4.7 (42 ratings) — better4.4 (12 ratings)
Positive reviews84.4% of reviews — better70.0% of reviews
Number of ratings42 — better12
Update frequencyEvery 3 weeks — betterEvery 6 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
Best chart rank#182 — better—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS1313.0
Further details — not scored
Size26 MB7 MB
Age rating4+4+
Developer4Pockets.comCem Olcay

Customer experience

NuRack Auv3 FX Processor

All ratings42 ratings
Positive92.9%
Neutral2.4%
Negative4.8%
Written reviews32 reviews
Positive84.4%
Neutral6.3%
Negative9.4%

MelodyBud Generative Sequencer

All ratings12 ratings
Positive83.3%
Neutral8.3%
Negative8.3%
Written reviews10 reviews
Positive70.0%
Neutral10.0%
Negative20.0%

In-app purchases

None

NuRack Auv3 FX Processor

No in-app purchases

None

MelodyBud Generative Sequencer

No in-app purchases

Questions

Is NuRack Auv3 FX Processor free?
NuRack Auv3 FX Processor costs $12.99, with no in-app purchases.
Is MelodyBud Generative Sequencer free?
MelodyBud Generative Sequencer costs $6.99, with no in-app purchases.
Which has better reviews, NuRack Auv3 FX Processor or MelodyBud Generative Sequencer?
NuRack Auv3 FX Processor is rated higher. NuRack Auv3 FX Processor averages 4.7 out of 5 from 42 ratings, while MelodyBud Generative Sequencer averages 4.4 from 12 ratings.
Do NuRack Auv3 FX Processor or MelodyBud Generative Sequencer have ads?
Neither NuRack Auv3 FX Processor nor MelodyBud Generative Sequencer shows ads.
Which is updated more often, NuRack Auv3 FX Processor or MelodyBud Generative Sequencer?
NuRack Auv3 FX Processor ships an update every 3 weeks, and MelodyBud Generative Sequencer every 6 weeks. Most recently, NuRack Auv3 FX Processor was updated on September 25, 2026 and MelodyBud Generative Sequencer on September 24, 2026.

Other comparisons