SECTOR vs Fluss
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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 descriptionHide 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
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.
- 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
Read full descriptionHide 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
Verdict
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
SECTOR costs $8.99 and Fluss $13.99 up front. Neither carries in-app purchases, so what you see is what you pay.
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.
Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 21, 2026 and October 23, 2026 respectively.
| Parameter | SECTOR | Fluss |
|---|---|---|
| Price | $8.99 — better | $13.99 |
| Rating | 4.7 (87 ratings) | 4.8 (71 ratings) — better |
| Positive reviews | 90.3% of reviews — better | 78.0% of reviews |
| Number of ratings | 87 — better | 71 |
| Update frequency | Every 3 months | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 9.0 — better | 12 |
| Further details — not scored | ||
| Size | 23 MB | 453 MB |
| Age rating | 4+ | 4+ |
| Developer | Kymatica AB | Bram Bos |
Customer experience
SECTOR
Fluss
User reviews
SECTOR
From 87 App Store ratingsWhat 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 ratingsWhat 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 moreShow fewer
- 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 moreShow fewer
- 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 moreShow fewer
- 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
SECTOR
No in-app purchases
Fluss
No in-app purchases









