# BTU XT vs AmpSet Blue

The clearest difference is ratings volume: BTU XT at 5 against AmpSet Blue's 1. AmpSet Blue's advantage is iOS requirement (8.0 vs 11.0). On price, rating, update cadence and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for BTU XT against 5.0 for AmpSet Blue. That said, the two scores are not equally well evidenced: BTU XT has 5 ratings behind it against 1, so its average is the more settled of the two.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 1, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | BTU XT | AmpSet Blue |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (5 ratings)](https://appshunter.io/ios/app/btu-xt/id790911884/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/ampset-blue/id829199050/reviews) |
| Number of ratings | **5** | 1 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free | Free |
| Size | 8 MB | 16 MB |
| Requires iOS | 11.0 | **8.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [BTU Ventilation](https://appshunter.io/developer/790911887) | [Sun Hydraulics Corporation](https://appshunter.io/developer/958574432) |

## What reviewers say

### BTU XT

[App page](https://appshunter.io/ios/app/btu-xt/id790911884)

Monitor and control agricultural storage environments remotely. Securely access unit status, view detailed equipment data, and adjust control panel parameters with a familiar interface. Designed for ease of use with a simple human-machine interface.

**Highlights:** Remote environment monitoring, Secure user login, View unit status and parameters, Detailed equipment data display, Adjust control panel settings, Familiar HMI interface

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

**In-app purchases:** none


### AmpSet Blue

[App page](https://appshunter.io/ios/app/ampset-blue/id829199050)

Configure Sun's Bluetooth Embedded Amplifiers wirelessly using your iOS device. This app allows for on-site tuning of electro-proportional cartridges with an intuitive interface and smart prompts. Save configuration files or email them for backup and reuse.

**Highlights:** Wireless Bluetooth configuration, Configure electro-proportional cartridges, On-site tuning, Save and email configuration files, Intuitive interface with smart prompts, Supports iPad, iPhone, and iPod

**In-app purchases:** none


## Frequently asked questions

### Is BTU XT free?

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

### Is AmpSet Blue free?

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

### Which has better reviews, BTU XT or AmpSet Blue?

BTU XT and AmpSet Blue are both rated 5.0 out of 5 on the App Store, from 5 and 1 ratings respectively.

### Do BTU XT or AmpSet Blue have ads?

Neither BTU XT nor AmpSet Blue shows ads.

### Which is updated more often, BTU XT or AmpSet Blue?

BTU XT ships an update every 2 months, and AmpSet Blue every 2 months. Most recently, BTU XT was updated on October 1, 2026 and AmpSet Blue on October 9, 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.*