# Subat vs HD

The clearest difference is rating: HD at 5.0 against Subat's 4.2. HD also leads on ads (none vs shown) and monetization model (free vs free with in-app purchases). Subat's advantage is update cadence (every 2 months vs every 10 months). On price, ratings volume, in-app purchases and device support there is nothing between them.

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

HD holds the better App Store score, 5.0 against 4.2. Both are backed by a comparable volume of ratings — 6 and 3 respectively.

Subat ships an update every 2 months, HD every 10 months. The most recent releases landed on October 8, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Subat | HD |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (6 ratings)](https://appshunter.io/ios/app/subat/id1167598127/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/hd-300-assistant/id1526764718/reviews)** |
| Number of ratings | **6** | 3 |
| Positive reviews | 73.9% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 2 months** | Every 10 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 66 MB | 76 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Guangxi Xushang Information Technology Co., Ltd.](https://appshunter.io/developer/1804272491) | [Yamaha Corporation](https://appshunter.io/developer/353469356) |

## What reviewers say

### Subat

[App page](https://appshunter.io/ios/app/subat/id1167598127)

This app offers a secure platform for accessing popular local content. It adheres to legal regulations and promotes core socialist values through a strict review system, ensuring a safe and comfortable user experience. Subscription options are available for enhanced access.

**Highlights:** Access to popular local content, Secure and safe user experience, Strict content review system, Monthly subscription service, Ad-supported content

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### HD

[App page](https://appshunter.io/ios/app/hd-300-assistant/id1526764718)

This application connects to a specific device via Bluetooth to remotely control musical functions. It allows instructors to guide students with features like metronome operation, tempo setting, and pitch adjustment. It also includes tools for chord detection and tuning.

**Highlights:** Remote HD control (keyboard, metronome, temperament, transposition), Customizable beat and tempo settings, Individual volume and pitch adjustment, Demonstrate mode for pitch and volume feedback, Chord detection and naming, Adjustable tuner, Rhythm assistant

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Subat free?

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

### Is HD free?

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

### Which has better reviews, Subat or HD?

HD is rated higher. Subat averages 4.2 out of 5 from 6 ratings, while HD averages 5.0 from 3 ratings.

### Do Subat or HD have ads?

Subat shows ads; HD does not.

### Which is updated more often, Subat or HD?

Subat ships an update every 2 months, and HD every 10 months. Most recently, Subat was updated on October 8, 2026 and HD on October 6, 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.*