Comparison

SunVox 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

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
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

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

SunVox4 screens
OCTACHRON MIDI Drum Sequencer4 screens

Verdict

The call

The clearest difference is rating: SunVox at 4.9 against OCTACHRON MIDI Drum Sequencer's 4.5. SunVox also leads on price ($5.99 vs $9.99) and review sentiment (93% vs 81%). On update cadence, 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 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

SunVox holds the better App Store score, 4.9 against 4.5. Both are backed by a comparable volume of ratings — 332 and 104 respectively. Written reviews point the same way: 93% of SunVox's written reviews are positive against 81% of OCTACHRON MIDI Drum Sequencer's.

UpkeepUpdate frequency

SunVox ships an update monthly, OCTACHRON MIDI Drum Sequencer every 2 months. The most recent releases landed on October 19, 2026 and October 14, 2026 respectively.

Scorecard4 real differences · 6 level
SunVox versus OCTACHRON MIDI Drum Sequencer: the parameters behind the verdict, then further details
ParameterSunVoxOCTACHRON MIDI Drum Sequencer
Price$5.99 — better$9.99
Rating4.9 (332 ratings) — better4.5 (104 ratings)
Positive reviews93.4% of reviews — better81.0% of reviews
Number of ratings332 — better104
Update frequencyMonthly — betterEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.012.0
Further details — not scored
Size110 MB12 MB
Age rating4+4+
DeveloperAlexander ZolotovMarkus Teufel

Customer experience

SunVox

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

OCTACHRON MIDI Drum Sequencer

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

User reviews

SunVox

From 332 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

OCTACHRON MIDI Drum Sequencer

From 104 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

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

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

SunVox

No in-app purchases

None

OCTACHRON MIDI Drum Sequencer

No in-app purchases

Questions

Is SunVox free?
SunVox costs $5.99, 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, SunVox or OCTACHRON MIDI Drum Sequencer?
SunVox is rated higher. SunVox averages 4.9 out of 5 from 332 ratings, while OCTACHRON MIDI Drum Sequencer averages 4.5 from 104 ratings.
Do SunVox or OCTACHRON MIDI Drum Sequencer have ads?
Neither SunVox nor OCTACHRON MIDI Drum Sequencer shows ads.
Which is updated more often, SunVox or OCTACHRON MIDI Drum Sequencer?
SunVox ships an update monthly, and OCTACHRON MIDI Drum Sequencer every 2 months. Most recently, SunVox was updated on October 19, 2026 and OCTACHRON MIDI Drum Sequencer on October 14, 2026.

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