iPhone Screenshots


***Note that this app requires a custom Bluetooth module to function. Info on the module can be found here:

The Fuel-It Ethanol Content app 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.

Ethanol concentration monitoring
Fuel temperature monitoring
2 Display Views
Fuel temperature display in Fahrenheit or Celsius
Ethanol fill-up concentration calculator

We have some exciting updates planned already so ensure auto-updates are enabled for this app.

What's New

Version 1.1.1

Minor bug fixes.

Adjustable tank size.

Customer Reviews

Well worth the price!


Even if you have the JB4 Mobile app for monitoring your Ethanol percentage, get this app! Especially if you're not running 100% E85. This app has a feature that helps you determine how much E85/Pump fuel to add to hit your target percentage. I used to do the math myself at the pump, but this app is SO much more convenient! Well worth the price.

Focus RS Fuel it E analyzer


This is seriously awesome. Super way install - highly recommend.

I have it 4 stars because it’s lacking item, the Ethanol mix calculator assumed your “E85” is actually 85% ethanol- this isn’t always true. My local is 70% ethanol- so I have to mix more than what the calculator says.

If you added a default index, of some sort where the ethanol content could be changed - and also adjust for the fact that most pump gas 91/93 octane have up to 10% ethanol already.

Otherwise - great product


Donnie Wittbrodt
2.2 MB
Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© Dmac Mobile Developments, LLC


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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