# Fuel vs E85 Calculator

The clearest difference is rating: Fuel at 3.1 against E85 Calculator's 1.0. Fuel also leads on review sentiment (50% vs 25%) and update cadence (every 10 months vs every 29 months). 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.

Fuel holds the better App Store score, 3.1 against 1.0. That said, the two scores are not equally well evidenced: Fuel has 33 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 50% of Fuel's written reviews are positive against 25% of E85 Calculator's.

Fuel ships an update every 10 months, E85 Calculator every 29 months. The most recent releases landed on August 27, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Fuel | E85 Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.1 (33 ratings)](https://appshunter.io/ios/app/fuel-it-eca/id1004246767/reviews)** | [1.0 (2 ratings)](https://appshunter.io/ios/app/e85-calculator/id1029273167/reviews) |
| Number of ratings | **33** | 2 |
| Positive reviews | **50.0% of reviews** | 25.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 months** | Every 29 months |
| Monetization | Free | Free |
| Size | 20 MB | 3 MB |
| Requires iOS | **13.4** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Dmac Mobile Developments, LLC](https://appshunter.io/developer/372235786) | [Sheharyar Irfan](https://appshunter.io/developer/974971911) |

## 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


### E85 Calculator

[App page](https://appshunter.io/ios/app/e85-calculator/id1029273167)

This application helps performance enthusiasts and flex-fuel vehicle owners precisely calculate the amounts of E85 and gasoline needed for specific ethanol percentages or octane ratings. It offers both simple and advanced modes for fuel mixing calculations, supporting metric and imperial units.

**Highlights:** Calculate E85 and gasoline amounts, Target specific ethanol percentages, Calculate by desired octane rating, Metric and imperial unit support, Real-time calculations, Easy and advanced modes

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Fuel free?

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

### Is E85 Calculator free?

E85 Calculator is free to download, with no in-app purchases.

### Which has better reviews, Fuel or E85 Calculator?

Fuel is rated higher. Fuel averages 3.1 out of 5 from 33 ratings, while E85 Calculator averages 1.0 from 2 ratings.

### Do Fuel or E85 Calculator have ads?

Neither Fuel nor E85 Calculator shows ads.

### Which is updated more often, Fuel or E85 Calculator?

Fuel ships an update every 10 months, and E85 Calculator every 29 months. Most recently, Fuel was updated on August 27, 2026 and E85 Calculator on September 8, 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.*