# trx vs NEPTUNE amplifier control

The clearest difference is update cadence: NEPTUNE amplifier control at every 3 months against trx's every 23 months. trx's advantage is iOS requirement (13.0 vs 15.1). On price, ads, 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.

trx ships an update every 23 months, NEPTUNE amplifier control every 3 months. The most recent releases landed on October 9, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | trx | NEPTUNE amplifier control |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 23 months | **Every 3 months** |
| Size | 20 MB | 33 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [micro systems](https://appshunter.io/developer/1023315804) | [Pavlo Glazunov](https://appshunter.io/developer/1834138014) |

## What reviewers say

### trx

[App page](https://appshunter.io/ios/app/trx-control/id6478390481)

**Features:** macOS Compatibility

**In-app purchases:** none


### NEPTUNE amplifier control

[App page](https://appshunter.io/ios/app/neptune-amplifier-control/id6751232865)

**In-app purchases:** none


## Frequently asked questions

### Is trx free?

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

### Is NEPTUNE amplifier control free?

NEPTUNE amplifier control is free to download, with no in-app purchases.

### Do trx or NEPTUNE amplifier control have ads?

Neither trx nor NEPTUNE amplifier control shows ads.

### Which is updated more often, trx or NEPTUNE amplifier control?

trx ships an update every 23 months, and NEPTUNE amplifier control every 3 months. Most recently, trx was updated on October 9, 2026 and NEPTUNE amplifier control on October 8, 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.*