# Armytrix vs Fuel

The clearest difference is review sentiment: Fuel at 50% against Armytrix's 18%. Fuel also leads on iOS requirement (13.4 vs 16.6). On price, update cadence, ads and in-app purchases there is nothing between them.

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

Armytrix ships an update every 7 months, Fuel every 10 months. The most recent releases landed on September 23, 2026 and August 27, 2026 respectively.

## The numbers

| Metric | Armytrix | Fuel |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.1 (33 ratings)](https://appshunter.io/ios/app/fuel-it-eca/id1004246767/reviews)** |
| Number of ratings | — | **33** |
| Positive reviews | 17.6% of reviews | **50.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 7 months** | Every 10 months |
| Monetization | Free | Free |
| Size | 9 MB | 20 MB |
| Requires iOS | 16.6 | **13.4** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ARMYTRIX CORP.](https://appshunter.io/developer/990665140) | [Dmac Mobile Developments, LLC](https://appshunter.io/developer/372235786) |

## What reviewers say

### Armytrix

[App page](https://appshunter.io/ios/app/armytrix/id990665141)

This app provides wireless control for exhaust valves and displays real-time ECU data. It simplifies performance monitoring and allows for manual clearing of fault codes, enhancing the tuning experience.

**Highlights:** Wireless connection, Valvetronic exhaust control, Real-time ECU data display, Automatic catalytic converter fault code elimination, Manual fault code erasing, Performance data logging

**Features:** macOS Compatibility

**In-app purchases:** none


### Fuel

[App page](https://appshunter.io/ios/app/fuel-it-eca/id1004246767)

Monitor your vehicle's ethanol concentration and fuel temperature in real-time. This app wirelessly connects to a compatible Bluetooth module, freeing up your device's port for simultaneous charging and monitoring. It includes an ethanol fill-up concentration calculator and customizable display views.

**Highlights:** Real-time ethanol concentration monitoring, Real-time fuel temperature monitoring, Wireless Bluetooth connectivity, Ethanol fill-up concentration calculator, Fahrenheit or Celsius display options, Two display views

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

**In-app purchases:** none


## Frequently asked questions

### Is Armytrix free?

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

### Is Fuel free?

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

### Do Armytrix or Fuel have ads?

Neither Armytrix nor Fuel shows ads.

### Which is updated more often, Armytrix or Fuel?

Armytrix ships an update every 7 months, and Fuel every 10 months. Most recently, Armytrix was updated on September 23, 2026 and Fuel on August 27, 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.*