Comparison

Konstrukt vs P422 Fairuz

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

Head to head
About

Konstrukt

Design your own playable surfaces, sequence them, and create sounds with built-in instruments or your own AUv3 plugins. Mix and record your creations, then unlock a visual graph to rewire everything for deeper control. It functions as a standalone app or an AUv3 within other hosts.

Highlights
  • Customizable playable surfaces
  • Advanced sequencing capabilities
  • Built-in and AUv3 instrument hosting
  • Visual graph editor for deep control
  • Multi-track recording and mixing
  • MIDI and audio routing
Features
Currently charting
Read full description

Konstrukt is a patchable instrument for iPad and iPhone. Design the surface you play, sequence it, give it sound with built-in instruments and your own AUv3 plug-ins, mix and record it — and when you want to go deeper, unlock the visual graph underneath and rewire all of it. Standalone, and as an AUv3 in your host. SURFACES YOU DESIGN • The KB-1 keyboard suite — piano, diatonic chord pads, scale-locked keyboard, MPE Seaboard ribbon, MPE Strings grid (4ths) and a 4×4 drum-pad grid, each with an arpeggiator. Successor to the KB-1 Expressive Keyboard Suite. • Knobs, faders, XY pads, buttons, live visualizers and channel strips on a snapping grid, in pages like hardware banks. Bind any control to MIDI CC — or, with the unlock, to any parameter in the patch. A SUITE OF SEQUENCERS • Drum, melody, chord, analog and CC lanes, the Drum Grid, a Metropolis-style Stage Seq and a Matrix note grid — tap to edit, with per-step velocity, probability, trigger conditions, ratchets and microtiming. • Patterns up to four bars, eight banks per lane. Record into patterns step by step or live, then fix it in the grid. A Looper with quantize, undo and expression capture. • Players: one tap on a lane writes a pattern from a style and a Complexity slider — drums with fills, a bass under your chords, chord stabs and pushes. • One patch key and scale every lane can follow, custom scales, and chord lanes with their own rhythm layer. INSTRUMENTS AND YOUR PLUG-INS • Built in: a two-oscillator Synth, a Wavetable synth, Drums, MegaSaw, a Sampler and a loop Slicer, plus Drive, Filter, Delay, Reverb, Compressor, EQ, Chorus and Phaser — each with its own panel. • Host your AUv3 instruments, effects and MIDI effects inside the patch (standalone app), with floating plug-in windows, presets and bindable parameters. THE RACK • A strip per instrument: fader, pan, mute and solo, inserts, pre- or post-fader sends to bus strips, sidechain, MIDI Learn, master inserts, and scenes recalled with a fade. Hardware synths join as External Instruments. • Bring a mic or guitar in on its own channel. Record the master and stems to 24-bit WAV. Tap tempo, metronome with count-in, Ableton Link, MIDI clock in and out. Multi-output routing on a multi-channel interface. UNLOCK — THE GRAPH EDITOR (in-app purchase) Everything above runs on one visual graph that carries MIDI and audio. Unlock the editor to rewire it: • 80+ node kinds — arps, scale quantizers, chords, echoes, swing, euclidean rhythms, LFOs and CC tools, wired MIDI In → processors → instruments or MIDI Out. • Components — save a cluster of nodes as one card with real ports, its surface cards included; drop saved components into any patch and edit them inside. • Audio on the same canvas — cable instruments through effect chains and hosted effects, split sends to buses, key a sidechain. The Rack is this graph seen as strips. • Emergence generators — Game of Life, Turing machine, Wolfram rules, Markov chains, bouncing balls, a Lorenz attractor — patterns that evolve instead of loop. Every keyboard is a routable node, every knob can drive any parameter. Factory graph patches open and play without the unlock. The unlock is the editor and nothing else. WITH HARDWARE, OTHER APPS OR A DESKTOP DAW • MIDI out over CoreMIDI, extra output ports and an always-on virtual port: 16 channels plus MPE. • One USB cable to a Mac, or Bluetooth MIDI — two MPE surfaces and a controller that reshapes per track, no driver needed. • As an AUv3, load Konstrukt as a MIDI processor or as an instrument in hosts such as AUM, Logic Pro, GarageBand, Cubasis, Drambo and Loopy Pro. PRICING One-time purchases, no subscription. The app is the whole instrument; the graph editor is a single optional unlock. One purchase covers iPad and iPhone. Requires iOS 17 or iPadOS 17 or later; on iPhone the app runs in landscape. Plug-in hosting, audio input and recording are part of the standalone app. No user data is collected.

About

P422 Fairuz

This app offers a powerful four-band parametric equalizer with selectable curves and proportional Q for precise sound shaping. It emulates classic op-amp circuits, adding harmonic density and character, with features like a sub-bass circuit and input transformer control.

Highlights
  • Four op-amp EQ bands with Bell/Contour/Contour X2 shapes
  • Proportional Q for musical width
  • TREMOR sub-bass circuit
  • VOICE input transformer and HAMMER output stage saturation
  • Real-time spectrum analyzer
  • AUv3 plugin and standalone app
Features
Read full description

P422 Fairuz is a four-band op-amp parametric EQ that moves past hardware — the punch and harmonic density of classic op-amp circuits, with capabilities the originals never had. Shape your sound with HIGH, HI-MID, LO-MID and LOW bands, each with three selectable curves (Bell, Contour, Contour X2) and proportional Q: wide stays wide, narrow finds itself. LO and HI shelves with complementary dip behavior, switchable HPF/LPF, and the TREMOR circuit laying a sub-bass foundation below 30 Hz. Character comes from the circuit, not just the curve: OUT drives the op-amp output stage, VOICE adds drive on top of it, and HAMMER adds the output transformer after it, for body, density and saturation — op-amp color available even with the EQ bands off. Blend it all in parallel with the MIX control, no DAW routing needed. FEATURES - Four op-amp EQ bands with Bell / Contour / Contour X2 shapes - Proportional Q — musical at any width - Stepped or continuous frequency modes - LO / HI shelves with complementary dip - TREMOR sub-bass circuit below 30 Hz - Switchable HPF / LPF with position options - Op-amp output stage: OUT drive, VOICE drive and the HAMMER output transformer - MIX parallel blend and Dual Mono L/R behavior - Spectrum visualizer: drag the band dots, tap one for its card; IN/OUT analyzer with freeze, range, resolution, speed and tilt - A/B states and 276 factory presets with notes, tags, search and favorites - Out & Trim linked gain staging - Zero latency, optional oversampling FORMATS - AUv3 plug-in for AUM, Logic Pro, GarageBand, Cubasis and other AUv3 hosts - Standalone app with mic/interface input Bring console-grade op-amp tone to your iPad and iPhone.

Screenshots

Konstrukt4 screens
P422 Fairuz3 screens

Verdict

The call

The clearest difference is price: Konstrukt at $7.99 against P422 Fairuz's $19.99. Konstrukt also leads on ratings volume (10 vs 1) and chart position (#170 vs unranked). P422 Fairuz's advantage is in-app purchases (none vs 1) and review sentiment (100% vs 67%). On 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

CostPrice · In-app purchases · Ads · Monetization

Konstrukt costs $7.99 and P422 Fairuz $19.99 up front. Konstrukt sells 1 one-off in-app purchase. P422 Fairuz asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

P422 Fairuz holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Konstrukt has 10 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 67% of Konstrukt's written reviews are positive against 100% of P422 Fairuz's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 5 days. The most recent releases landed on November 10, 2026 and October 31, 2026 respectively.

Scorecard8 real differences · 3 level
Konstrukt versus P422 Fairuz: the parameters behind the verdict, then further details
ParameterKonstruktP422 Fairuz
Price$7.99 — better$19.99
Rating4.8 (10 ratings)5.0 (1 ratings) — better
Positive reviews66.7% of reviews100.0% of reviews — better
Number of ratings10 — better1
Update frequencyEvery 5 daysEvery 5 days
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
Best chart rank#170 — better—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015.0 — better
Further details — not scored
Size65 MB46 MB
Age rating4+4+
DeveloperKai ArasPulsar Modular

Customer experience

Konstrukt

All ratings10 ratings
Positive90.0%
Neutral10.0%
Negative0.0%
Written reviews6 reviews
Positive66.7%
Neutral33.3%
Negative0.0%

P422 Fairuz

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Konstrukt

One-time1
  • Graph Editor Unlock$7.99
None

P422 Fairuz

No in-app purchases

Questions

Is Konstrukt free?
Konstrukt costs $7.99, and also offers in-app purchases.
Is P422 Fairuz free?
P422 Fairuz costs $19.99, with no in-app purchases.
Which has better reviews, Konstrukt or P422 Fairuz?
P422 Fairuz is rated higher. Konstrukt averages 4.8 out of 5 from 10 ratings, while P422 Fairuz averages 5.0 from 1 ratings.
Do Konstrukt or P422 Fairuz have ads?
Neither Konstrukt nor P422 Fairuz shows ads.
Which is updated more often, Konstrukt or P422 Fairuz?
Konstrukt ships an update every 5 days, and P422 Fairuz every 5 days. Most recently, Konstrukt was updated on November 10, 2026 and P422 Fairuz on October 31, 2026.

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