Comparison

SECTOR vs Fluss

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

Head to head
About

SECTOR

This app allows musicians to slice and sequence audio loops using a probability-based matrix and a classic step sequencer. It offers time-bending effects for unique sound manipulation and real-time performance tweaking, bridging the gap between controlled patterns and random sonic exploration.

Highlights
  • Probability-matrix sample slice sequencer
  • Classic pattern step-sequencer
  • Time-warping transfer functions
  • Real-time performance tweaking
  • Import custom loops
  • Inter-App Audio and Audiobus support
  • MIDI Clock sync
Read full description

Proud winner of a 2015 Electronic Musician Editors’ Choice Award! Slice and sequence your loops with a matrix of markov-chain connections. Introduce order with the probability based coin-flipping pattern sequencer. Bend time with warp functions for glitches and modulations. Tweak and trigger in real time performance. Get anything between rigid control and random chaos. • Unique probability-matrix sample slice sequencer • Classic pattern step-sequencer for absolute control • Time-warping transfer functions for various effects • Includes high-quality loops by Richard Devine, Sonic Mayhem, Arovane, Alex Matheu and Sunsine Audio • Import custom loops from other apps, AudioShare, Pasteboard or using iTunes FileSharing • Stream audio to other apps via Inter-App Audio or Audiobus • Synchronize to Inter-App Audio hosts such as AUM, Auria or Garageband • MIDI Clock slave/master to sync with other apps or hardware • MIDI control for triggers, volume, start/stop, and loading projects • Supports Audiobus Remote triggers • Record and export the results as perfectly synchronized loops • Audiobus state saving "One of the most innovative and entertaining audio apps you’ll ever encounter" - David Biedny at MacLife.com "Engrossing, beautiful, wild and a fine addition to the iPad studio" - Computer Music Magazine "This is already, I think, a must-buy. Going to have fun playing with it. Enjoy!" - Peter Kirn at CreateDigitalMusic.com "It is utterly brilliant" - John Walden at MusicAppBlog.com

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
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

Fluss4 screens

Verdict

The call

The clearest difference is price: SECTOR at $8.99 against Fluss's $13.99. SECTOR also leads on review sentiment (90% vs 78%) and iOS requirement (9.0 vs 12). Fluss's advantage is device support (3 vs 1). On rating, ratings volume, update cadence 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

SECTOR costs $8.99 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 — 4.7 for SECTOR against 4.8 for Fluss. Both are backed by a comparable volume of ratings — 87 and 71 respectively. Written reviews are what separate them: 90% of SECTOR's written reviews are positive against 78% of Fluss's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 21, 2026 and October 23, 2026 respectively.

Scorecard4 real differences · 6 level
SECTOR versus Fluss: the parameters behind the verdict, then further details
ParameterSECTORFluss
Price$8.99 — better$13.99
Rating4.7 (87 ratings)4.8 (71 ratings) — better
Positive reviews90.3% of reviews — better78.0% of reviews
Number of ratings87 — better71
Update frequencyEvery 3 monthsEvery 3 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPadiPhone, iPad, iPod — better
Requires iOS9.0 — better12
Further details — not scored
Size23 MB453 MB
Age rating4+4+
DeveloperKymatica ABBram Bos

Customer experience

SECTOR

All ratings82 ratings
Positive93.9%
Neutral0.0%
Negative6.1%
Written reviews113 reviews
Positive90.3%
Neutral2.7%
Negative7.1%

Fluss

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

User reviews

SECTOR

From 87 App Store ratings

What we love

  • 🎨 Beautiful and intuitive visual interface design
  • 🎵 Innovative beat slicing and sample manipulation capabilities
  • 🎲 Powerful probability-based sequencing and generative features
  • ⚡ Immediate and engaging user experience for sound experimentation
  • 🔧 Deep control options for both casual and advanced users

Room to improve

  • ❌ Not available as Audio Unit (AU/AUv3) plugin
  • ⏱️ Limited sample time to 3 minutes maximum
  • 🚫 No refund policy
  • 📱 Not available on macOS or desktop platforms
  • 🔊 Steep learning curve despite beautiful interface

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

SECTOR

Reported bugs

6 issues
  • Warp effects occasionally get stuck and repeat longer than intended
  • Audio clicks and clipping between slices
  • Does not appear as usable Audio Unit in AUM
  • Incompatibility with newer iPad display sizes and gestures
  • Occasional audio quality degradation with multiple jumps
Show 1 more
  • App may not be updated for current iOS versions

Requested features

15 requests
  • AUv3 plugin support for use in DAWs and AUM
  • macOS and desktop application version
  • MIDI slave/sync capability and MIDI control mapping
  • iPhone compatibility
  • Multiple instance support for layering
Show 10 more
  • Live audio input processing capability
  • Longer sample duration support (beyond 3 minutes)
  • Stereo panning controls for individual sectors
  • Mute/silence individual sectors
  • Ableton Link sync support
  • In-app level control distinct from volume
  • Smoother slice transitions without clicks
  • More diverse preset variety
  • Built-in effects processor per slice
  • Home gesture support for newer iPads

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

SECTOR

No in-app purchases

None

Fluss

No in-app purchases

Questions

Is SECTOR free?
SECTOR costs $8.99, with no in-app purchases.
Is Fluss free?
Fluss costs $13.99, with no in-app purchases.
Which has better reviews, SECTOR or Fluss?
Fluss is rated higher. SECTOR averages 4.7 out of 5 from 87 ratings, while Fluss averages 4.8 from 71 ratings.
Do SECTOR or Fluss have ads?
Neither SECTOR nor Fluss shows ads.
Which is updated more often, SECTOR or Fluss?
SECTOR ships an update every 3 months, and Fluss every 3 months. Most recently, SECTOR was updated on October 21, 2026 and Fluss on October 23, 2026.

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