SunVox vs OP
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Modular interface
- Pattern-based sequencer
- Microtonal sequencing
- Sample import (WAV, AIFF, XI)
- XM and MOD import
- MIDI import/export
- Built-in synthesizers and effects
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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!
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.
- Wireless screen for OP-Z
- Real-time data visualization
- Mixer level monitoring
- Effect level monitoring
- Multi-touch mixer control
- Touchpad for effects/filters
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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
Verdict
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
OP is free to download; SunVox costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.
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.
SunVox ships an update monthly, OP every 6 weeks. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.
| Parameter | SunVox | OP |
|---|---|---|
| Price | $5.99 | Free — better |
| Rating | 4.9 (336 ratings) — better | 4.2 (116 ratings) |
| Positive reviews | 93.4% of reviews — better | 47.2% of reviews |
| Number of ratings | 336 — better | 116 |
| Update frequency | Monthly — better | Every 6 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 110 MB | 127 MB |
| Age rating | 4+ | 4+ |
| Developer | Alexander Zolotov | Teenage Engineering |
Customer experience
SunVox
OP
User reviews
SunVox
From 336 App Store ratingsWhat 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 ratingsWhat 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 moreShow fewer
- 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
SunVox
No in-app purchases
OP
No in-app purchases








