Fuel vs e85Cal
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
e85Cal
This app assists users in calculating the precise amounts of standard and ethanol gasoline needed to achieve a desired ethanol percentage in their fuel mix. It simplifies the process by taking into account tank size, current fuel level, and the ethanol content of available fuel types.
- Calculate ethanol percentage goal
- Enter gas tank size
- Input standard pump gas ethanol %
- Input ethanol pump gas ethanol %
- Set target ethanol % mix
- Enter current fuel level %
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e85Cal help you calculate your ethanol percentage goal. It fast, simple, and easy to use. Just enter the following information: 1) How big is your gas tank? 2) What is the ethanol % in the standard pump gas? 3) What is the ethanol % in the ethanol pump gas? 4) What is your target ethanol % mix goal? 5) What is your current ethanol % min in your vehicle? 6) What is your current fuel level % in your vehicle? Results will display how many gallons or liters of standard and ethanol gas to pump in your vehicle based on your input.
Screenshots
Verdict
The clearest difference is rating: e85Cal at 4.7 against Fuel's 3.1. e85Cal also leads on review sentiment (83% vs 50%) and update cadence (every 4 months vs every 10 months). On price, ratings volume, ads and in-app purchases 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.
e85Cal holds the better App Store score, 4.7 against 3.1. Both are backed by a comparable volume of ratings — 33 and 35 respectively. Written reviews point the same way: 50% of Fuel's written reviews are positive against 83% of e85Cal's.
Fuel ships an update every 10 months, e85Cal every 4 months. The most recent releases landed on August 27, 2026 and September 26, 2026 respectively.
| Parameter | Fuel | e85Cal |
|---|---|---|
| Price | Free | Free |
| Rating | 3.1 (33 ratings) | 4.7 (35 ratings) — better |
| Positive reviews | 50.0% of reviews | 83.3% of reviews — better |
| Number of ratings | 33 | 35 — better |
| Update frequency | Every 10 months | Every 4 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 13.4 | 12.1 — better |
| Further details — not scored | ||
| Size | 20 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | Dmac Mobile Developments, LLC | Michael Joe |
Customer experience
Fuel
e85Cal
In-app purchases
Fuel
No in-app purchases
e85Cal
No in-app purchases
