Comparison

SunVox vs Fluss

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

Head to head
About

SunVox

This is a powerful, cross-platform modular synthesizer and pattern-based music sequencer. It offers a wide range of built-in synthesizers, effects, and sample support for creating complex musical compositions.

Highlights
  • Modular interface
  • Pattern-based sequencer
  • Microtonal sequencing
  • Sample import (WAV, AIFF, XI)
  • XM and MOD import
  • MIDI import/export
  • Built-in synthesizers and effects
Features
Currently charting
Read full description

SunVox is one of the most powerful music creation tools for iOS. It is a small and fast cross-platform modular synthesizer with pattern based sequencer (tracker). [ Key features ] • Modular interface. • Powerful microtonal sequencer. • Highly optimized synth algorithms. • Support of 16/24/32bit WAV, AIFF and XI samples. • XM (FastTracker) and MOD (ProTracker, OctaMED) import. • Multitrack WAV export. • MIDI import/export. • MIDI IN/OUT. • Mic/Line recording (using the Sampler). • Audio Unit Extension (AUv3 instrument/effect), Audiobus. • Generative music features: random selection of notes, random values of controllers, probability effects. • It's possible to use SunVox engine in your own applications using the free library for developers. • It is also available for other systems (see the site). [ Brief instruction ] The main menu - button with the SunVox icon in the upper left corner of the screen. To connect one module (source) to another (destination): first touch on the source, second touch on the destination. Official SunVox homepage, user manual, video tutorials: https://warmplace.ru/soft/sunvox SunVox music: https://warmplace.ru/soft/sunvox/#music Found a bug? Have some questions? Just write me directly: nightradio@gmail.com The answer comes immediately! [ Built-in synthesizers & effects ] • Generators; • DrumSynth with 120 unique synthetic drum sounds; • FM synthesizer; • Multisample instrument; • SpectraVoice (FFT-based synthesizer for warm atmospheric sounds); • Side Chain Compressor; • Distortion; • Echo & Reverb; • Equalizer & Filters; • Flanger; • Loop (for glitch effects); • Vocal Filter (for human voice simulation); • Vorbis Player; • WaveShaper; • Pitch Detector; • Pitch Shifter; • and more ... [ Jordan Rudess about this app ] Sunvox is a serious music application. I am personally running it on my iphone. In the overcrowded world of music apps, Sunvox stands out as both unique and powerful. If you are a musician and own an iphone, you owe it to yourself to try this amazing application!

About

Fluss

Explore granular synthesis with a tactile interface. Import, record, or live-process audio to create unique sound textures, drones, and echoes. Features kinetic sliders for dynamic modulation and a unique shimmer feedback effect.

Highlights
  • Granular synthesis engine
  • Import, record, or live process audio
  • Kinetic sliders for modulation
  • Shimmer feedback effect
  • MIDI playable
  • Oberheim Xpander inspired filter
  • Microtonal experiment support
Features
Currently charting
Read full description

Fluss is a sonic playground designed by Bram Bos and Berlin-based musician Hainbach to let you explore granular synthesis in a hands-on way. The playful touch UI invites anything from live performance, experimentation to learning and mastering the granular concept. Multiple plugins: Import, Record or Live Process You can import your own WAVs (standalone & AUv3 Instrument plugin), Record audio (Record effect plugin) or live-process sound (Process effect plugin) to create anything from drones and granular echoes to moving microtonal audio textures. Designed for touch: Kinetic Sliders All sliders and XY pads are linked to a physics model which lets you flick and throw them around. Minimise the friction for endless bouncing motion, as an innovative substitute for traditional LFOs and modulation. There was never a better reason for using a touchscreen for music. Shimmer Feedback effect Like a shimmer reverb, except it feeds the processed audio back into the grain engine. This lets you create an endless loop of pitch-shifting spaciousness, turning even the simplest of sounds into massive woolly mammoths. - 3 Voice grain engine, each with an independent playhead - Playable via MIDI (since version 1.1) - Filter inspired by the Oberheim Xpander, including its resonant Phase filter - Kinetic sliders and pads for playful interaction with the sound - Universal design (iPhone and iPad; iPad Air 2 or higher recommended) - Custom scales, unquantised mode and even Scala-import for microtonal experiments - Use WAVs (or other audio files), record audio or load the app as a live-processing audio effect - Real world tested as an instrument in numerous live performances by Hainbach - Offers light mode and dark mode UI

Screenshots

SunVox4 screens
Fluss4 screens

Verdict

The call

The clearest difference is price: SunVox at $5.99 against Fluss's $13.99. SunVox also leads on update cadence (monthly vs every 3 months) and review sentiment (93% vs 78%). On rating, 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

SunVox costs $5.99 and Fluss $13.99 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 SunVox against 4.8 for Fluss. Both are backed by a comparable volume of ratings — 336 and 71 respectively. Written reviews are what separate them: 93% of SunVox's written reviews are positive against 78% of Fluss's.

UpkeepUpdate frequency

SunVox ships an update monthly, Fluss every 3 months. The most recent releases landed on October 31, 2026 and October 30, 2026 respectively.

Scorecard4 real differences · 7 level
SunVox versus Fluss: the parameters behind the verdict, then further details
ParameterSunVoxFluss
Price$5.99 — better$13.99
Rating4.9 (336 ratings) — better4.8 (71 ratings)
Positive reviews93.4% of reviews — better78.0% of reviews
Number of ratings336 — better71
Update frequencyMonthly — betterEvery 3 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
Best chart rank#131#103 — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.012
Further details — not scored
Size110 MB453 MB
Age rating4+4+
DeveloperAlexander ZolotovBram Bos

Customer experience

SunVox

All ratings332 ratings
Positive96.7%
Neutral0.9%
Negative2.4%
Written reviews272 reviews
Positive93.4%
Neutral2.9%
Negative3.7%

Fluss

All ratings71 ratings
Positive97.2%
Neutral0.0%
Negative2.8%
Written reviews50 reviews
Positive78.0%
Neutral4.0%
Negative18.0%

User reviews

SunVox

From 336 App Store ratings

What we love

  • 🚀 Powerful modular synth and tracker
  • 🔧 Highly configurable and flexible
  • 🎨 Excellent for sound design and music creation
  • 💻 Cross-platform (desktop, mobile, embedded)
  • 💰 Great value for money

Room to improve

  • 📚 Steep learning curve, not beginner-friendly
  • 📱 UI can feel cramped on smaller screens
  • 🐛 Occasional crashes and stability issues
  • 🔇 Lack of built-in effects like compression and limiting

Fluss

From 71 App Store ratings

What we love

  • 💡 Innovative touch interface
  • 🎶 Great for soundscapes
  • ✨ Unique sound manipulation
  • 🎛️ Intuitive controls
  • 🎵 Highly playable instrument

Room to improve

  • 🐛 Crashes frequently
  • ⚫ Black screen issue
  • 🎧 No audible output
  • 🎛️ Not enough control
  • 😵 Too much chaos

Bugs and requests

SunVox

Reported bugs

2 issues
  • Compatibility issues with newer iOS versions
  • Inconsistent behavior when importing/exporting projects

Requested features

5 requests
  • Improved file management and organization
  • Expanded MIDI and automation capabilities
  • Ability to create and save custom module presets
  • More intuitive and streamlined user interface
  • Support for external MIDI controllers and keyboards

Fluss

Reported bugs

4 issues
  • Crashes with black screen
  • No audible output
  • App resets when put in background
  • Cyan play head difficult to see on waveform

Requested features

20 requests
  • Adjustable layer field per grain
  • Record from internal microphone
  • More control over grain direction
  • BPM settings
  • Transition from clean to new sounds
Show 15 more
  • AUv3 plugin version
  • Scan speed multiplier (x2, x4)
  • Draw lines on pitch XY pad
  • Lock oscillators on pitch XY pad
  • Assign play heads triggered by external controller
  • Snapshots for pitch section
  • More clock and tempo syncing options
  • Visualization of buffer, playback head speed, modulation
  • Quantizer visualization
  • User-changeable pitch XY pad layout
  • Global friction and separate sensitivity option
  • Modulation to specific play head
  • Proper sampling button (microphone access)
  • Preset browser arrows
  • More control over panning, filter, scan speed

In-app purchases

None

SunVox

No in-app purchases

None

Fluss

No in-app purchases

Questions

Is SunVox free?
SunVox costs $5.99, with no in-app purchases.
Is Fluss free?
Fluss costs $13.99, with no in-app purchases.
Which has better reviews, SunVox or Fluss?
SunVox is rated higher. SunVox averages 4.9 out of 5 from 336 ratings, while Fluss averages 4.8 from 71 ratings.
Do SunVox or Fluss have ads?
Neither SunVox nor Fluss shows ads.
Which is updated more often, SunVox or Fluss?
SunVox ships an update monthly, and Fluss every 3 months. Most recently, SunVox was updated on October 31, 2026 and Fluss on October 30, 2026.
Which is more popular, SunVox or Fluss?
SunVox currently peaks at #131 in the App Store charts, and Fluss at #103. Chart position reflects recent download velocity rather than total install base.

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