Comparison

PolyBud Polyrhythmic Sequencer vs Stellarvox

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

Head to head
About

PolyBud Polyrhythmic Sequencer

Create complex musical sequences with multiple polyrhythmic tracks. Control note, velocity, gate, and MIDI CC parameters with independent step lengths and rates. Route MIDI output to your favorite synths and AUv3 hosts.

Highlights
  • Multitrack polyrhythmic MIDI sequencing
  • Note and MIDI CC tracks
  • Configurable step lengths per mode
  • Independent track rates
  • Assignable MIDI channels
  • Ramp value for CC smoothing
  • AUv3 plugin support
Features
Read full description

PolyBud is a multitrack polyrhythmic AUv3 MIDI sequencer. You can add multiple note or MIDI CC tracks to the each pattern. The note tracks has the note, velocity, gate, ratchet, probability and randomisation modes. You can set different step lengths to the each mode which would introduce polyrhythmic variations immediately. Another great feature is the each track can run in a different rate which is great for creating unique polyrhythmic sequences. Also, you can assign different MIDI channels to the each track so that you can control multiple synths within a single PolyBud pattern. The MIDI CC tracks is great for modulating the synth parameters. You can introduce polyrhythmic modulations by setting the different step lengths and different rates to your MIDI CC tracks. Also, you can set a ramp value for smoothing up the CC value changes per step. If you set the ramp value to 0% then you can have the classic sample and hold modulation. PolyBud is a MIDI app and it don't produce any sound of its own. You need to route PolyBud's MIDI out to your audio apps in order to run PolyBud. For the AUv3 plugin, you need an AUv3 host app such as AUM, Cubase, NanoStudio, ZenBeats, BeatMaker, apeMatrix etc.

About

Stellarvox

Design immersive ambient soundscapes with a hybrid reverb and artificial space designer. Create lush textures, deep spaces, and whispering backgrounds for electronic, experimental, and sound design projects. Offers intuitive controls and inspiring presets for quick, high-quality results.

Highlights
  • Hybrid reverb with artificial space designer
  • Algorithmic reflections tail processing
  • Dynamic timbre changes over time
  • Geometry and dimension control
  • Factory presets and random feature
  • MIDI learn support
  • Standalone and AUv3 module
Features
Read full description

Hybrid reverb with an artificial space designer, combining it with algorithmic reflections tail processing, is ideal to creating immersive ambience of deep spaces, lush atmospheric textures or stunning whispering backgrounds in your ambient, electronic, experimental and sound design projects. Unlike traditional algorithmic reverbs, Stellarvox constructs a complex model of a vast resonant sound spaces with choice of geometry, dimensions and tonal structure of the space, along with a unique feature that dynamically change the timbre of reflections over the reverberation time. The second algorithmic reverb allows you to prolong and blur reflections, adding extra dimensions to the sound space. Easy-to-use controls on a single screen, along with optimally designed parameters that always give great results, make insignificant the peculiarity of that kind of reverbs, when the model creates with a little delay after changing it. Factory presets and the random feature will give you a starting point of inspiration and allow you to get a quick result where you need just to slightly tweak the parameters to align with your idea. This application is great for ambient projects, it can create mesmerizing atmosphere from single infrequent sounds of various instruments, or giving a beautiful and deep backgrounds to sharp sequences in electronics, as well as for any experimental projects that require unusual, deep and rich sound ambience. Stellarvox is a universal application for iOS and macOS. It can work on iPhone and iPad as well as Mac / MacBook with M1 chip (and later). Stellarvox works on iPhone and iPad standalone, as an Audio Unit or Inter-App Audio module, with supports Audiobus host app. On MacOS, Stellarvox can works both as a standalone application and as an Audio unit (AUv3) with DAWs and other hosts that support AUv3 plugins. All application features are available on iOS and macOS, including MIDI support (with a MIDI learn option) and audio unit parameters. Stellarvox has a built-in detailed description of all parameters also available as PDF file on the application site. Sound demo: https://www.youtube.com/watch?v=TEtZfvLtJy8 https://www.youtube.com/watch?v=FqCYa1tp2Qw You can find more information on Stellarvox and other audio apps at: https://motion-soundscape.blogspot.com

Screenshots

PolyBud Polyrhythmic Sequencer4 screens
Stellarvox3 screens

Verdict

The call

The clearest difference is price: PolyBud Polyrhythmic Sequencer at $3.99 against Stellarvox's $11.99. PolyBud Polyrhythmic Sequencer also leads on update cadence (every 5 weeks vs every 5 months) and iOS requirement (13.0 vs 15.0). On rating, review sentiment, ratings volume and ads 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

PolyBud Polyrhythmic Sequencer costs $3.99 and Stellarvox $11.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for PolyBud Polyrhythmic Sequencer against 5.0 for Stellarvox. Both are backed by a comparable volume of ratings — 9 and 11 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

PolyBud Polyrhythmic Sequencer ships an update every 5 weeks, Stellarvox every 5 months. The most recent releases landed on September 21, 2026 and September 7, 2026 respectively.

Scorecard3 real differences · 7 level
PolyBud Polyrhythmic Sequencer versus Stellarvox: the parameters behind the verdict, then further details
ParameterPolyBud Polyrhythmic SequencerStellarvox
Price$3.99 — better$11.99
Rating4.9 (9 ratings)5.0 (11 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings911 — better
Update frequencyEvery 5 weeks — betterEvery 5 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.0
Further details — not scored
Size7 MB4 MB
Age rating4+4+
DeveloperCem OlcayIgor Vasiliev

Customer experience

PolyBud Polyrhythmic Sequencer

All ratings9 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Stellarvox

All ratings11 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

PolyBud Polyrhythmic Sequencer

No in-app purchases

None

Stellarvox

No in-app purchases

Questions

Is PolyBud Polyrhythmic Sequencer free?
PolyBud Polyrhythmic Sequencer costs $3.99, with no in-app purchases.
Is Stellarvox free?
Stellarvox costs $11.99, with no in-app purchases.
Which has better reviews, PolyBud Polyrhythmic Sequencer or Stellarvox?
Stellarvox is rated higher. PolyBud Polyrhythmic Sequencer averages 4.9 out of 5 from 9 ratings, while Stellarvox averages 5.0 from 11 ratings.
Do PolyBud Polyrhythmic Sequencer or Stellarvox have ads?
Neither PolyBud Polyrhythmic Sequencer nor Stellarvox shows ads.
Which is updated more often, PolyBud Polyrhythmic Sequencer or Stellarvox?
PolyBud Polyrhythmic Sequencer ships an update every 5 weeks, and Stellarvox every 5 months. Most recently, PolyBud Polyrhythmic Sequencer was updated on September 21, 2026 and Stellarvox on September 7, 2026.

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