# Fuel vs Spool Ethanol Analyzer

The clearest difference is rating: Spool Ethanol Analyzer at 4.1 against Fuel's 3.1. Spool Ethanol Analyzer also leads on iOS requirement (11.0 vs 13.4). Fuel's advantage is review sentiment (50% vs 40%). On price, ratings volume, 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.

Spool Ethanol Analyzer holds the better App Store score, 4.1 against 3.1. Both are backed by a comparable volume of ratings — 33 and 14 respectively. Written reviews complicate that: 50% of Fuel's written reviews are positive against 40% of Spool Ethanol Analyzer'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, Spool Ethanol Analyzer every 13 months. The most recent releases landed on October 15, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Fuel | Spool Ethanol Analyzer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.1 (33 ratings)](https://appshunter.io/ios/app/fuel-it-eca/id1004246767/reviews) | **[4.1 (14 ratings)](https://appshunter.io/ios/app/spool-ethanol-analyzer/id1418992096/reviews)** |
| Number of ratings | **33** | 14 |
| Positive reviews | **50.0% of reviews** | 40.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 months** | Every 13 months |
| Monetization | Free | Free |
| Size | 20 MB | 9 MB |
| Requires iOS | 13.4 | **11.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Dmac Mobile Developments, LLC](https://appshunter.io/developer/372235786) | [Ajay Rajeev](https://appshunter.io/developer/1418992095) |

## 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


### Spool Ethanol Analyzer

[App page](https://appshunter.io/ios/app/spool-ethanol-analyzer/id1418992096)

This application connects to a wireless sensor kit to measure in-tank ethanol content and fuel temperature. It also features a mixing ratio calculator that can be used independently of the sensor hardware.

**Highlights:** Connects to Spool Wireless Ethanol Sensor Kit, Measures in-tank ethanol content, Measures fuel temperature, Includes mixing ratio calculator, Uses Low energy Bluetooth protocols, Fast and reliable data

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Fuel free?

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

### Is Spool Ethanol Analyzer free?

Spool Ethanol Analyzer is free to download, with no in-app purchases.

### Which has better reviews, Fuel or Spool Ethanol Analyzer?

Spool Ethanol Analyzer is rated higher. Fuel averages 3.1 out of 5 from 33 ratings, while Spool Ethanol Analyzer averages 4.1 from 14 ratings.

### Do Fuel or Spool Ethanol Analyzer have ads?

Neither Fuel nor Spool Ethanol Analyzer shows ads.

### Which is updated more often, Fuel or Spool Ethanol Analyzer?

Fuel ships an update every 10 months, and Spool Ethanol Analyzer every 13 months. Most recently, Fuel was updated on October 15, 2026 and Spool Ethanol Analyzer on October 4, 2026.

---

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