Comparison

Rozeta Sequencer Suite vs OCTACHRON MIDI Drum Sequencer

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

Head to head
About

Rozeta Sequencer Suite

This app provides a suite of 10 MIDI sequencers and controllers for mobile music production. Explore freeform sequencing, generative patterns, and precise control over MIDI instruments within compatible host applications.

Highlights
  • 10 MIDI Audio Units
  • Monosequencer with randomization
  • Euclidean drum sequencer
  • Classic step sequencer
  • Triple MIDI LFO generator
  • XY Controller Pad
  • MIDI arpeggiator
  • MIDI particle generator
  • Polyphonic step recorder
  • Generative pattern explorer
Features
Read full description

Rozeta is a suite of MIDI sequencers and controllers that lets you explore a new, freeform approach to sequencing and controlling mobile music apps. The app contains 10 MIDI Audio Units (a totally new feature in iOS11) in a single package, which can be loaded in compatible MIDI AU hosts (AUM, Cubasis 2, ApeMatrix, Sequencism). 1) Rozeta Bassline: a monosequencer based on the popular Troublemaker sequencer. Obviously comes with all the randomization and mutation features. Up to 8 patterns per sequence, with Follow Actions. Transpose using MIDI. 2) Rozeta Rhythm: a euclidean drum sequencer with mutations per instrument and polyrhythms. Comes with configurable key mappings for many popular drum apps. 3) Rozeta X0X: classic TR-styles step sequencer for drum machines. Supports triplets, polyrhythms and mutations per channel. Optionally emulates the exact timing jitter pattern of the legendary TR-808 4) Rozeta LFO: a triple MIDI LFO generator lets you modulate CC parameters of your MIDI instruments. Apply amplitude modulation to each wave for more organic behavior. Optionally syncs to tempo. 5) Rozeta XY: a double XY Controller Pad for generating 4 simultaneous configurable CC controller streams per instance. Also features MOD wheel and PitchBend sliders. 6) Rozeta Arpeggio: adds a MIDI arpeggiator to any of your synths. Offers latch mode, shuffle and automatic tempo synchronization. Turn any incoming MIDI stream into an arpeggio on the fly. 7) Rozeta Particles: MIDI particle generator - generates a cloud of MIDI notes that create pseudo-random patterns when bounding off the walls. 8) Rozeta Cells: Polyphonic Step Recorder - record and play back polyphonic phrases and patterns. 9) Rozeta Collider: MIDI Hadron Collider - explore semi-repeating generative patterns and melodies. 10) Rozeta Scaler (NEW): MIDI Scale Quantizer and Transposer - tune incoming MIDI to a different scale, never play out of tune again. Notes: - these plugins do not run as a standalone app and require a compatible host to work - MIDI is not sound. To make sound you'll have to feed the MIDI into a synthesizer or instrument app. Bring your own synths!

About

OCTACHRON MIDI Drum Sequencer

This app is a flexible MIDI drum sequencer for iOS, offering up to 16 tracks with advanced modulation and sequencing. It can be used standalone or as an AUv3 plugin in DAWs, and is optimized for drums but also suitable for melodies. It requires iOS 12 or higher.

Highlights
  • 16 mutable tracks
  • AUv3 MIDI plugin
  • Standalone operation
  • Parameter locking
  • Smart randomizer
  • Chainable patterns
  • Custom time signatures
Features
Read full description

OCTACHRON is a very flexible iOS MIDI Drum Sequencer with up to 16 tracks and rich modulation and sequencing capabilities. It is optimized for drums, but also a lot of fun for basic melody lines. It works standalone or as AUv3 MIDI plugin in your favorite iOS DAW or mixer. (E.g. AUM, Logic Pro, Cubasis, Beatmaker, ApeMatrix, Groove Rider, Nanostudio and more (not GarageBand)) PRESS REVIEWS - “OCTACHRON is almost perfect now” (haQ attaQ) - “Favorite MIDI Sequencer - User's Choice Award 2022” (iOS AUv3 Facebook Group) - “An exciting MIDI sequencer with advanced features” (Synth Anatomy) - “Particularly the probability parameters are a lot of fun” (Amazona) !!! PLEASE NOTICE: OCTACHRON IS A MIDI SEQUENCER AND DOES NOT CREATE ANY SOUNDS OF ITS OWN !!! We believe in specialization. This is why OCTACHRON is focused on in depth MIDI sequencing. Control your favorite iOS drums like Blip Box, Ruismaker or MV08, synths like Zeeon or Model D or any other hard- or software MIDI instrument with it. iOS 12 or higher required. If used with a host software, this has to be compatible with the MIDI AudioUnit standard. OVERVIEW - Standalone or AUv3 AudioUnit - 1-32 steps with flexible clock divider and custom time signatures - Up to 16 mutable tracks with adjustable length - Up to 8 chainable patterns (song mode) - Swing with flexible swing grid - Save, restore and export your pattern presets, MIDI files and MIDI mapping presets - Parameter lock for velocity, ratcheting, offset, trigger probability, trigger condition, gate length and MIDI CC Modulation - Scales generator - MIDI control pattern selection, play and mute - Customizable mapping and mapping presets - Works iOS 12 upwards - Optimized for iPad and iPhone - Also compatible standalone with M Macs and Apple Vision Pro LOTS OF MAPPING PRESETS FOR POPULAR DRUM APPS AND HARDWARE - AR-909, Axxon 2 & Blip Box - Dadamachines Automat, Digistix & DM1/DM2/Drumlab - DrumComputer by Sugar Bytes - EGDR 606, 808 & 909 - FAC Drumkit, Hammerhead - Koala Sampler & Korg Gadgets - MV08 & NS2 Slate - Pure Acid Drums - Ruismaker & Ruismaker FM - SDS-X, Sitala & Splat-To-Clat - VA Drum SM, VA Drum2 808 & 909 - Vatanator - Korg Electribe EMX & ER-1 - Korg Volca Beats - MFB 522 - Roland MC-101 - Roland TR-08 - Roland TR-707 & 727 - Roland TR-808 - Roland TR-909 Also save, load and share your own MIDI mappings ... SMART RANDOMIZER - Smart pattern randomizer - Randomizer configuration per track - Trigger mutation per track - Mutation of internal and CC modulation parameters PARAMETER LOCK - Velocity and MIDI CC modulation - Multiple hits per step with ratcheting - Offset - Trigger probability - Trigger condition - Gate length - MIDI CC on every step - 8 CCs per Track - Mutation of Internal and CC Modulation TRACK SETTINGS - Assign MIDI notes to each track or use mapping presets - Individual track length to create polyrhythms LIVE PERFORMANCE FEATURES - Instant pattern switch option - Mute function per track to easily build up layers CONNECTIVIY - Sequence other standalone apps, AUv3 AudioUnits or external hardware via MIDI - OCTACHRON derives its timing from the host application, its internal clock or via AbletonLink - Trigger on different MIDI channels per track NO TRACKING - OCTACHRON works offline - No push notifications - No ads or in-app purchases - No tracking tools - Active on social media and in the mobile music community - Ongoing development and support and many new features on the list FOR MELODIC INSTRUMENTS GENERATE VARIOUS SCALES IN ALL KEYS OCTACHRON is optimized for drums. But it also supports standard melodic scales like major, minor and also more unusual ones like mixolydian, phrygian and more ...

Screenshots

Rozeta Sequencer Suite4 screens
OCTACHRON MIDI Drum Sequencer4 screens

Verdict

The call

Rozeta Sequencer Suite and OCTACHRON MIDI Drum Sequencer both sit at 4.8 stars, but that hides the real split: 81% of OCTACHRON MIDI Drum Sequencer's written reviews are positive against 72% of Rozeta Sequencer Suite's. On price, rating, ratings volume and update cadence 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

Rozeta Sequencer Suite costs $9.99 and OCTACHRON MIDI Drum Sequencer $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Rozeta Sequencer Suite holds the better App Store score, 4.8 against 4.6. Both are backed by a comparable volume of ratings — 152 and 106 respectively. Written reviews complicate that: 72% of Rozeta Sequencer Suite's written reviews are positive against 81% of OCTACHRON MIDI Drum Sequencer's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Rozeta Sequencer Suite ships an update every 5 weeks, OCTACHRON MIDI Drum Sequencer every 2 months. The most recent releases landed on November 7, 2026 and November 2, 2026 respectively.

Scorecard1 real difference · 9 level
Rozeta Sequencer Suite versus OCTACHRON MIDI Drum Sequencer: the parameters behind the verdict, then further details
ParameterRozeta Sequencer SuiteOCTACHRON MIDI Drum Sequencer
Price$9.99$9.99
Rating4.8 (152 ratings) — better4.6 (106 ratings)
Positive reviews71.6% of reviews81.0% of reviews — better
Number of ratings152 — better106
Update frequencyEvery 5 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better12.0
Further details — not scored
Size3 MB12 MB
Age rating4+4+
DeveloperBram BosMarkus Teufel

Customer experience

Rozeta Sequencer Suite

All ratings152 ratings
Positive93.4%
Neutral3.3%
Negative3.3%
Written reviews102 reviews
Positive71.6%
Neutral10.8%
Negative17.6%

OCTACHRON MIDI Drum Sequencer

All ratings104 ratings
Positive88.5%
Neutral3.8%
Negative7.7%
Written reviews105 reviews
Positive81.0%
Neutral8.6%
Negative10.5%

User reviews

Rozeta Sequencer Suite

From 152 App Store ratings

What we love

  • 💎 Versatile collection of sequencers and MIDI tools
  • 🎯 Excellent value for money
  • ⚡ Low CPU usage and stable performance
  • 🎨 Clean and intuitive user interface
  • 🔧 Highly customizable and flexible

Room to improve

  • 🎚️ Limited LFO rate options
  • 📱 Compatibility issues with some DAWs (Cubasis, BeatMaker 3, GarageBand)
  • 🖱️ Cumbersome UI for numeric input (tiny arrows instead of text fields)
  • 📖 Insufficient documentation and tutorials
  • 🎛️ One-way loopable menus frustrating to navigate

OCTACHRON MIDI Drum Sequencer

From 106 App Store ratings

What we love

  • 👍 Intuitive and easy to use
  • 💡 Powerful and versatile sequencer
  • 🚀 Produces results quickly
  • 🌟 Great for drum patterns
  • 🎛️ Excellent modulation options

Room to improve

  • 🐛 Pattern change via MIDI difficult
  • ❓ Clock div issues reported
  • 💡 Missing touchable pads
  • ❓ No sound output reported
  • 🐛 Projects broken by update

Bugs and requests

Rozeta Sequencer Suite

Reported bugs

10 issues
  • App fails to launch on some iPad models
  • Crashes when used as AUv3 plugin in certain DAWs
  • Instability in Cubasis causing DAW crashes
  • Arpeggiator cuts notes short instead of quantizing
  • Random note playback in some configurations
Show 5 more
  • Audio glitches and note cutoff issues
  • Polyphonic aftertouch data not transposed in Scaler
  • Incompatibility with specific DAW versions
  • Plugin window elements become obscured
  • Difficulty syncing with certain host applications

Requested features

20 requests
  • Faster LFO rate options (16x tempo sync)
  • MIDI export functionality for patterns
  • Pattern switching and saving capabilities
  • Wider clock division range (beyond 2 bars)
  • LFO phase position control and reset via MIDI
Show 15 more
  • Randomness/mutation control via MIDI mapping
  • Live recording feature
  • Forward/backward sequence playback
  • MIDI retrigger function for Bassline and Cells
  • Polyphonic aftertouch support in Scaler
  • Gate time control for arpeggiator
  • Piano roll sequencer module
  • Motion recording for XY pad
  • Velocity level adjustment in drum sequencer
  • Editable cells with note visibility in Cells plugin
  • Longer maximum note length for pads
  • Euclidean sequencer custom pattern creation
  • Preset kit saving for X0X
  • MIDI learn button for drum samples
  • Standalone mode with MIDI out capability

OCTACHRON MIDI Drum Sequencer

Reported bugs

24 issues
  • Clock div issues reported
  • No sound output reported
  • Projects broken by update
  • Skipping first note on pattern change
  • GUI glitchy/choppy
Show 19 more
  • Crashing when loading custom mapping
  • Repeating notes unexpectedly
  • Kick muting in song mode
  • Controller faders not working perfectly
  • Unwanted random notes
  • MIDI recording not an option
  • Pattern change via MIDI difficult
  • GarageBand AUv3 compatibility issues
  • No sound output
  • Projects corrupted after update
  • Clock division not working
  • Difficulty changing patterns
  • MIDI note sequences cannot be recorded
  • Choppy visual experience
  • Random notes played with ThumbJam
  • Crash when loading saved custom mapping
  • Skipping first note when switching patterns
  • Repeating notes without repeat enabled
  • Kick drum mutes in song mode

Requested features

26 requests
  • Add touchable pads
  • Add MIDI Step record feature
  • Add triplets
  • Add MIDI file export and import
  • Add system-wide preset save and load
Show 21 more
  • Add randomization for different genres
  • Increase channel count to 16
  • Add more options for MIDI input for real-time control
  • Add MIDI learn button for each track
  • Add option to record drums live into the sequencer
  • Add more patterns
  • Follow mode for song mode GUI
  • Enhanced mod edit mode with inline editing
  • Ability to drag/select patterns in song mode to auto loop
  • App preset for Arturia iSpark
  • MIDI channel per drum sound
  • Number indicating parameter value while changing
  • Ability to tie patterns
  • Note length option
  • 16 channel support
  • MIDI channel per track
  • Pattern resync for DAW synchronization
  • Expandable number of patterns and rows
  • Preview sounds
  • Import sound directly into slots
  • Triplets division

In-app purchases

None

Rozeta Sequencer Suite

No in-app purchases

None

OCTACHRON MIDI Drum Sequencer

No in-app purchases

Questions

Is Rozeta Sequencer Suite free?
Rozeta Sequencer Suite costs $9.99, with no in-app purchases.
Is OCTACHRON MIDI Drum Sequencer free?
OCTACHRON MIDI Drum Sequencer costs $9.99, with no in-app purchases.
Which has better reviews, Rozeta Sequencer Suite or OCTACHRON MIDI Drum Sequencer?
Rozeta Sequencer Suite is rated higher. Rozeta Sequencer Suite averages 4.8 out of 5 from 152 ratings, while OCTACHRON MIDI Drum Sequencer averages 4.6 from 106 ratings.
Do Rozeta Sequencer Suite or OCTACHRON MIDI Drum Sequencer have ads?
Neither Rozeta Sequencer Suite nor OCTACHRON MIDI Drum Sequencer shows ads.
Which is updated more often, Rozeta Sequencer Suite or OCTACHRON MIDI Drum Sequencer?
Rozeta Sequencer Suite ships an update every 5 weeks, and OCTACHRON MIDI Drum Sequencer every 2 months. Most recently, Rozeta Sequencer Suite was updated on November 7, 2026 and OCTACHRON MIDI Drum Sequencer on November 2, 2026.

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