# OP vs SEQTRAK

The clearest difference is rating: SEQTRAK at 4.8 against OP's 4.2. SEQTRAK also leads on review sentiment (79% vs 47%). OP's advantage is update cadence (every 6 weeks vs every 5 months) and ratings volume (115 vs 9). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

SEQTRAK holds the better App Store score, 4.8 against 4.2. That said, the two scores are not equally well evidenced: OP has 115 ratings behind it against 9, so its average is the more settled of the two. Written reviews point the same way: 47% of OP's written reviews are positive against 79% of SEQTRAK's.

OP ships an update every 6 weeks, SEQTRAK every 5 months. The most recent releases landed on September 20, 2026 and July 5, 2026 respectively.

## The numbers

| Metric | OP | SEQTRAK |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (115 ratings)](https://appshunter.io/ios/app/op-z/id1088232296/reviews) | **[4.8 (9 ratings)](https://appshunter.io/ios/app/seqtrak/id1544687021/reviews)** |
| Number of ratings | **115** | 9 |
| Positive reviews | 47.2% of reviews | **78.6% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 5 months |
| Monetization | Free | Free |
| Size | 127 MB | 1.3 GB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Teenage Engineering](https://appshunter.io/developer/582616768) | [Yamaha Corporation](https://appshunter.io/developer/353469356) |

## What reviewers say

### OP

[App page](https://appshunter.io/ios/app/op-z/id1088232296)

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:** macOS Compatibility

**In-app purchases:** none


### SEQTRAK

[App page](https://appshunter.io/ios/app/seqtrak/id1544687021)

This app enhances your music production experience with a dedicated interface for real-time control and visual feedback. Manage projects, expand your sound library, and create dynamic visualizers that sync with your music. Learn new techniques with interactive tutorials.

**Highlights:** Real-time GUI editor for device control, Project and sound backup/reload, Cloud sound library expansion, 3D object and visual effect creation, AR mode for real-world footage integration, Dynamic, interactive tutorials

**In-app purchases:** none


## Frequently asked questions

### Is OP free?

OP is free to download, with no in-app purchases.

### Is SEQTRAK free?

SEQTRAK is free to download, with no in-app purchases.

### Which has better reviews, OP or SEQTRAK?

SEQTRAK is rated higher. OP averages 4.2 out of 5 from 115 ratings, while SEQTRAK averages 4.8 from 9 ratings.

### Do OP or SEQTRAK have ads?

Neither OP nor SEQTRAK shows ads.

### Which is updated more often, OP or SEQTRAK?

OP ships an update every 6 weeks, and SEQTRAK every 5 months. Most recently, OP was updated on September 20, 2026 and SEQTRAK on July 5, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*