# Fuel vs eFlexApp

The clearest difference is update cadence: eFlexApp at monthly against Fuel's every 10 months. eFlexApp also leads on rating (3.4 vs 3.1). Fuel's advantage is review sentiment (50% vs 33%) and ratings volume (33 vs 8). 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.

eFlexApp holds the better App Store score, 3.4 against 3.1. Both are backed by a comparable volume of ratings — 33 and 8 respectively. Written reviews complicate that: 50% of Fuel's written reviews are positive against 33% of eFlexApp's, so the app with the better star average is not the one people write more warmly about.

Fuel ships an update every 10 months, eFlexApp monthly. The most recent releases landed on August 27, 2026 and July 9, 2026 respectively.

## The numbers

| Metric | Fuel | eFlexApp |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.1 (33 ratings)](https://appshunter.io/ios/app/fuel-it-eca/id1004246767/reviews) | **[3.4 (8 ratings)](https://appshunter.io/ios/app/eflexapp/id1526677191/reviews)** |
| Number of ratings | **33** | 8 |
| Positive reviews | **50.0% of reviews** | 33.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Monthly** |
| Monetization | Free | Free |
| Size | 20 MB | 58 MB |
| Requires iOS | **13.4** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Dmac Mobile Developments, LLC](https://appshunter.io/developer/372235786) | [StepOne Tech Ltd](https://appshunter.io/developer/1388519134) |

## What reviewers say

### 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


### eFlexApp

[App page](https://appshunter.io/ios/app/eflexapp/id1526677191)

Monitor your eFlexFuel device in real-time, with features varying by device version. Adjust settings like language, temperature units, and theme. Track ethanol content, engine temperature, and more, depending on your specific eFlexFuel model.

**Highlights:** Real-time device monitoring, Adjustable settings (language, temp, theme), Ethanol content tracking, Engine temperature monitoring, Device status checks, Bluetooth connectivity

**In-app purchases:** none


## Frequently asked questions

### Is Fuel free?

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

### Is eFlexApp free?

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

### Which has better reviews, Fuel or eFlexApp?

eFlexApp is rated higher. Fuel averages 3.1 out of 5 from 33 ratings, while eFlexApp averages 3.4 from 8 ratings.

### Do Fuel or eFlexApp have ads?

Neither Fuel nor eFlexApp shows ads.

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

Fuel ships an update every 10 months, and eFlexApp monthly. Most recently, Fuel was updated on August 27, 2026 and eFlexApp on July 9, 2026.

---

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