Fuel vs Spool Ethanol Analyzer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Fuel
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.
- 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
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***Note that this app requires a custom Bluetooth module to function. Info on the module can be found here: https://fuel-it.com/products/fuel-it-bluetooth-flex-fuel-analyzer The Fuel-It ECA gives you realtime feedback from your Continental Ethanol sensor. Wireless communication frees up your device's port so you can monitor and charge at the same time. Features: Ethanol concentration monitoring Fuel temperature monitoring 2 Display Views Fuel temperature display in Fahrenheit or Celsius Ethanol fill-up concentration calculator
Spool Ethanol Analyzer
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.
- 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
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Spool Ethanol Analyzer is designed to connect to the Spool Wireless Ethanol Sensor Kit and/or the Spool Handheld ethanol analyzer to help determine the in-tank/pump ethanol content and fuel temperature. It incorporates the latest Low energy Bluetooth protocols and provides fast and reliable ethanol content information right on your smartphone. The App also includes a mixing ratio calculator and it can be used even if you don't have access to the Spool Wireless Ethanol Sensor Kit. The Spool Wireless Ethanol Sensor Kit can be purchased at www.spoolperformance.us
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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 6, 2026 and October 4, 2026 respectively.
| Parameter | Fuel | Spool Ethanol Analyzer |
|---|---|---|
| Price | Free | Free |
| Rating | 3.1 (33 ratings) | 4.1 (14 ratings) — better |
| Positive reviews | 50.0% of reviews — better | 40.0% of reviews |
| Number of ratings | 33 — better | 14 |
| Update frequency | Every 10 months — better | Every 13 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 13.4 | 11.0 — better |
| Further details — not scored | ||
| Size | 20 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Dmac Mobile Developments, LLC | Ajay Rajeev |
Customer experience
Fuel
Spool Ethanol Analyzer
In-app purchases
Fuel
No in-app purchases
Spool Ethanol Analyzer
No in-app purchases
Questions
Is Fuel free?
Is Spool Ethanol Analyzer free?
Which has better reviews, Fuel or Spool Ethanol Analyzer?
Do Fuel or Spool Ethanol Analyzer have ads?
Which is updated more often, Fuel or Spool Ethanol Analyzer?
Other comparisons
