Comparison

Quantum Sequencer vs Euclidean AUv3 Sequencer

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

Head to head
About

Quantum Sequencer

This app offers an interactive approach to music composition, focusing on detailed steps that can be arranged into looping sequences. It provides extensive control over note parameters and allows for real-time manipulation and experimentation.

Highlights
  • Interactive step-focused composition
  • Detailed step notation (probability, ornamentation)
  • Configurable sequence lengths and sub-sequences
  • 16 general faders for parameter editing
  • MIDI learnable faders
  • Programmable loop actions
  • Per-sequence MIDI FX, devices, and controllers
Read full description

Quantum is a performance midi sequencer which approaches music composition with an interactive creation processes - sometimes referred to as 'noodling'. Where pattern or piano-role sequencers are good for music forms (intro/verse/chorus etc) or grid entry, Quantum's approach is built around the idea of a step being the focus - think of the step as a single note or chord written on a music sheet then add a lot of extra notation (like probability of playing or ornamentation say). These highly detailed steps are then aligned into sequences (think melodies) that loop. You can have any length up to 64, but these can be further split into 4 sub-sequences that have their own set of sequencer parameters (like tempo, play direction, transpose etc). To enter step parameters such as note pitch, velocity, gated length etc, 16 general faders are available which allow you to draw, drag, select copy/paste, inc/dec & link together to edit values. These are also midi learnable (midi cc or nrpn) to allow you to use control surfaces or midi controllers. To aid you with faster control Quantum has loop actions which you can program in to carry out tasks when a sequence loops - e.g. transpose, randomise, start or load another sequence etc. With up to 24 sequences playing Quantum introduces a mixer page allowing you to blend midi velocities. Built on the MidiSequencer engine, midi FX, devices & Controllers are now possible per sequence. So why would Quantum be good for your setup? There are many midi enabled IOS & hardware synths that produce exotic timbres if you send them fast & varied midi controls that you just would not hear with keyboard playing or slow tempo tunes. Also, Quantum, embraces experimentation in melody creation and by copy/pasting allowing quick setup of arpeggios & counterpoint tunes that you can create & manipulate on the fly! note : This app sends midi information - you need to use it in conjunction with any midi enabled iOS synth app (e.g. Sunrizer) to hear sounds

About

Euclidean AUv3 Sequencer

Generate complex musical sequences automatically using Euclidean rhythms. This AUv3 plugin allows you to define multiple rhythm parts, create patterns, and switch between them seamlessly within your favorite DAW.

Highlights
  • 4 Band Sequencer
  • 16 Patterns per patch
  • Seamless pattern transitions
  • MIDI Chord recognition
  • AUv3 Compatible
  • Randomize function
Features
Read full description

Euclidean Sequencer is an alternative incarnation of the classic step sequencer that has become very popular in the modular realm. It is based on Euclidean rhythms developed by computer scientist Godfried Toussaint in 2004. Euclidean rhythms have their roots in Greek mathematician Euclid’s algorithm, which involves using the greatest common divisor of two numbers to place hits in a sequence as evenly as possible across a set timing divisions. In practice this is actually simpler than you might think, and Euclidean Sequencer is a great way to auto generate complex musical sequences with no prior knowledge of how it actually works. Euclidean Sequencer is an AUv3 plugin that can be loaded inside any popular host application that has flexible MIDI routing. You can define up to 4 Euclidean rhythm parts, each part is referred to as a band. The bands are labelled A-D and colour coded RED, ORANGE, GREEN and CYAN. Together these 4 bands create a pattern, and you can create up to 16 seperate patterns per song patch. Since each band can specify its own note sequence and output MIDI channel, you can create some quite sophisticated rythms patterns, driving 4 seperate instruments at once. Even better you can seamlessly switch patterns to create even longer evolving sequences. Patterns follow a specified key, scale, or defined chord. You can even use MIDI input to automatically make note sequences conform to the currently playing chords. Please note: This is an AUv3 plugin instended to be used inside your favourite host DAW such as AUM, Cubasis, Loopy Pro etc. It will work with any app that has flexible MIDI routing. This app is not compatible with GarageBand as it doesn't support MIDI plugins. Features 4 Band Sequencer 16 Patterns per patch. Up to 64 events per band. Seamless pattern transitions. Output Port and Channel control. Per Band and Global speeds. Randomize function with varying complexity. Supports note Probability. Reverse and PingPong modes. MIDI Chord recognition. Latch mode. 4 Band Velocity Mixer Controller support. Gate Mode. AUv3 Compatible.

Screenshots

Quantum Sequencer4 screens
Euclidean AUv3 Sequencer4 screens

Verdict

The call

The clearest difference is price: Quantum Sequencer at $7.99 against Euclidean AUv3 Sequencer's $14.99. Euclidean AUv3 Sequencer's advantage is rating (4.9 vs 4.6) and review sentiment (82% vs 69%). On ratings volume, update cadence, ads and in-app purchases 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

Quantum Sequencer costs $7.99 and Euclidean AUv3 Sequencer $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Euclidean AUv3 Sequencer holds the better App Store score, 4.9 against 4.6. Both are backed by a comparable volume of ratings — 35 and 29 respectively. Written reviews point the same way: 69% of Quantum Sequencer's written reviews are positive against 82% of Euclidean AUv3 Sequencer's.

UpkeepUpdate frequency

Quantum Sequencer ships an update every 6 weeks, Euclidean AUv3 Sequencer every 2 months. The most recent releases landed on September 19, 2026 and September 25, 2026 respectively.

Scorecard3 real differences · 7 level
Quantum Sequencer versus Euclidean AUv3 Sequencer: the parameters behind the verdict, then further details
ParameterQuantum SequencerEuclidean AUv3 Sequencer
Price$7.99 — better$14.99
Rating4.6 (35 ratings)4.9 (29 ratings) — better
Positive reviews68.8% of reviews81.8% of reviews — better
Number of ratings35 — better29
Update frequencyEvery 6 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better13.0
Further details — not scored
Size191 MB22 MB
Age rating4+4+
Developeranthony saunders4Pockets.com

Customer experience

Quantum Sequencer

All ratings35 ratings
Positive88.6%
Neutral2.9%
Negative8.6%
Written reviews32 reviews
Positive68.8%
Neutral9.4%
Negative21.9%

Euclidean AUv3 Sequencer

All ratings29 ratings
Positive96.6%
Neutral3.4%
Negative0.0%
Written reviews22 reviews
Positive81.8%
Neutral13.6%
Negative4.5%

In-app purchases

None

Quantum Sequencer

No in-app purchases

None

Euclidean AUv3 Sequencer

No in-app purchases

Questions

Is Quantum Sequencer free?
Quantum Sequencer costs $7.99, with no in-app purchases.
Is Euclidean AUv3 Sequencer free?
Euclidean AUv3 Sequencer costs $14.99, with no in-app purchases.
Which has better reviews, Quantum Sequencer or Euclidean AUv3 Sequencer?
Euclidean AUv3 Sequencer is rated higher. Quantum Sequencer averages 4.6 out of 5 from 35 ratings, while Euclidean AUv3 Sequencer averages 4.9 from 29 ratings.
Do Quantum Sequencer or Euclidean AUv3 Sequencer have ads?
Neither Quantum Sequencer nor Euclidean AUv3 Sequencer shows ads.
Which is updated more often, Quantum Sequencer or Euclidean AUv3 Sequencer?
Quantum Sequencer ships an update every 6 weeks, and Euclidean AUv3 Sequencer every 2 months. Most recently, Quantum Sequencer was updated on September 19, 2026 and Euclidean AUv3 Sequencer on September 25, 2026.

Other comparisons