iPhone Screenshots


App for calculating E85 blends with standard gas.

This will tell you how much octane levels and also the ethanol level.

You can put your desired level of either ethanol or octane and it will tell you how much E85 and Gas you should mix. This will also keep in consideration how much E85 blend is in the tank.

What’s New

Version 1.0.1

Fixed the % Filled Text field where the input was from the unit amount from tank capacity.

Ratings and Reviews

3.2 out of 5
10 Ratings

10 Ratings

former Mafia Live lover ,

Decent, but one flaw

Used this a few times. It works, but absolutely hate that I have to refill information every time I load this app. It does not save previously saved info. For example, tank size or desired E% rating.

N6647 ,

Love the app. Just wish one thing.

Terrific app!!!

Only wish there was a "save custom settings" feature, so those of us with custom tunes can save the percentage of Ethanol we run.

Fyi. Arizona only has E54 now. I'd like to set that at default as well as my tank size and desired E%, when I mix.

Developer Response ,

Thanks for using the E85 app. An update is coming soon to save custom settings.

One star One star ,

Spot on

Not going to lie it took a bit to get use to but once u get it down it's a life saver for people who have a fuel percentage slot on their car/tuner. Cross checked it with some other online e85 calculators and it's pot on 👌


Sheharyar Irfan
12.8 MB

Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
Rated 4+
© Sheharyar Irfan 2015


  • Family Sharing

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

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