Comparison

SunVox vs OP

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

OP

This app provides a wireless screen for the OP-Z synthesizer, displaying real-time musical data like mixer levels and effect amounts. It enhances interaction with multi-touch controls for simultaneous adjustments and a smooth touchpad for effects.

Highlights
  • Wireless screen for OP-Z
  • Real-time data visualization
  • Mixer level monitoring
  • Effect level monitoring
  • Multi-touch mixer control
  • Touchpad for effects/filters
Features
Read full description

This is the official OP-Z companion app. Use your iOS device as a wireless screen for the mighty OP-Z synthesizer. See the numbers and graphs behind the music you create in real time. At a glance, you know how your instruments are balanced in the mixer or just how much effect is applied to each instrument. The app adds another dimension to your interaction with the OP–Z. Unlocking multi-touch features, you can adjust multiple mixer sliders at once or use the smooth touch pad to adjust effects or filters.

Screenshots

SunVox4 screens
OP4 screens

Verdict

The call

The clearest difference is review sentiment: SunVox at 93% against OP's 47%. SunVox also leads on rating (4.9 vs 4.2). OP's advantage is price (Free vs $5.99). On ratings volume, update cadence, ads and in-app purchases 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

OP is free to download; SunVox costs $5.99 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 4.2. Both are backed by a comparable volume of ratings — 336 and 116 respectively. Written reviews point the same way: 93% of SunVox's written reviews are positive against 47% of OP's.

UpkeepUpdate frequency

SunVox ships an update monthly, OP every 6 weeks. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

Scorecard4 real differences · 6 level
SunVox versus OP: the parameters behind the verdict, then further details
ParameterSunVoxOP
Price$5.99Free — better
Rating4.9 (336 ratings) — better4.2 (116 ratings)
Positive reviews93.4% of reviews — better47.2% of reviews
Number of ratings336 — better116
Update frequencyMonthly — betterEvery 6 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.012.0
Further details — not scored
Size110 MB127 MB
Age rating4+4+
DeveloperAlexander ZolotovTeenage Engineering

Customer experience

SunVox

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

OP

All ratings115 ratings
Positive80.9%
Neutral1.7%
Negative17.4%
Written reviews36 reviews
Positive47.2%
Neutral5.6%
Negative47.2%

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

OP

From 116 App Store ratings

What we love

  • 👍 Well-designed software
  • 💡 Visual elements are great
  • 👍 Easy to use companion app
  • 🚀 Fast Bluetooth connection (sometimes)
  • 👍 Informative and clear layout

Room to improve

  • 🐛 Frequent connection issues
  • 🐛 App crashes often
  • 🐛 Incompatible with older iOS
  • 🐛 Hardware manufacturing defects
  • 🐛 Unreliable Bluetooth connectivity

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

OP

Reported bugs

26 issues
  • Manufacturing defects
  • App crashes when using videoout feature
  • App crashes or hangs with HDMI output
  • Unable to connect through Bluetooth or adapter
  • App no longer connects after getting a new iPad
Show 21 more
  • Won't reliably connect via Bluetooth
  • OP-Z won't stay connected to iPhone
  • Disconnects after Bluetooth setup
  • Won't connect via USB or Bluetooth
  • App won't stay connected
  • App crashes every time it's opened
  • Fails to pair to screenless OP-Z
  • Bluetooth still isn't working with current iOS
  • Cannot connect, screen button doesn't work
  • App not properly connected
  • Disconnects
  • Doesn't work on iPhone or iPad
  • Bluetooth connection not sticking on iOS version 14.2
  • Stopped working
  • Bluetooth in iPadOS14.2 disconnects
  • App no longer displays data from OP-Z
  • iPad won't scan for OP-Z
  • iPad app won't scan again
  • iPad won't scan or recognize OP-Z
  • Scan button currently doesn't detect OP-Z
  • OP-Z app is stuck in sync mode

Requested features

5 requests
  • Make compatible for older iOS
  • Offline guide available
  • Add clear dial metrics
  • Import sound plugs via app
  • Add own Unity graphics

In-app purchases

None

SunVox

No in-app purchases

None

OP

No in-app purchases

Questions

Is SunVox free?
SunVox costs $5.99, with no in-app purchases.
Is OP free?
OP is free to download, with no in-app purchases.
Which has better reviews, SunVox or OP?
SunVox is rated higher. SunVox averages 4.9 out of 5 from 336 ratings, while OP averages 4.2 from 116 ratings.
Do SunVox or OP have ads?
Neither SunVox nor OP shows ads.
Which is updated more often, SunVox or OP?
SunVox ships an update monthly, and OP every 6 weeks. Most recently, SunVox was updated on October 27, 2026 and OP on October 24, 2026.

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