# APE X85 — APE X85

> Monitor and tune Flex Fuel conversion modules for E85 gasoline engines. (iPhone/iPad app by AlternativePerformanceEng.)

- Source: https://appshunter.io/ios/app/ape-x85/id1435712370 (this page in markdown: same URL + `.md`)
- Developer: [AlternativePerformanceEng](https://appshunter.io/developer/1435712369)
- Category: Utilities
- Price: Free
- Rating: 4.20/5 from 6 App Store ratings · 3 written reviews indexed
- Age rating: 4+
- Requires: iOS 11.0 · 25 MB
- Languages: American English
- Released: 2018-10-23
- Data updated: 2026-06-01
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/ape-x85/id1435712370/reviews.md

## What is APE X85?

The APE X85 Flex Fuel Conversion module can be used to make a standard gasoline engine vehicle operate as a Flex Fuel vehicle that can run E85, gasoline of a mixture of the two.

This application allows you to monitor and configure your APE X85 Flex Fuel Conversion module.  It also allows you to use the advanced tuning features that let the user tune the ethanol delivery across different RPM ranges and has a built in data logger.

This app can also be used with the APE Multi-gauge module.

## Key features

- Flex Fuel conversion module monitoring
- E85 fuel compatibility
- Advanced ethanol delivery tuning
- RPM range configuration
- Built-in data logger
- APE Multi-gauge module support

## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/ape-x85/id1435712370/reviews.md

### 5/5 — Best for tuning

*2025-05-22, version 2.0.24*

Great job. Is user friendly and pretty darn accurate.

### 5/5 — MUST HAVE

*2021-03-22, version 2.0.24*

A must have for your flex fuel needs!

### 5/5 — Great tool

*2019-08-03, version 1.0*

Must have tool for Flex Fuel

## Frequently asked questions about APE X85

### What is APE X85?

APE X85 is a module and accompanying application that allows standard gasoline engine vehicles to operate as Flex Fuel vehicles, capable of running E85, gasoline, or a mixture of both.

### Can APE X85 be used with different fuel types?

Yes, APE X85 enables your vehicle to run on E85, standard gasoline, or any combination of the two fuels.

### Does APE X85 offer advanced tuning capabilities?

Yes, the application provides advanced tuning features, allowing users to precisely adjust ethanol delivery across various RPM ranges for optimal engine performance.

### What is the data logging feature in APE X85?

The built-in data logger allows you to record and analyze engine performance data, which can be useful for monitoring and further tuning your vehicle.

### Is APE X85 compatible with other APE modules?

Yes, this application can also be used in conjunction with the APE Multi-gauge module for expanded monitoring and functionality.

### What devices support APE X85?

APE X85 is available for iPhone, iPad, and iPod devices, as indicated by its supported devices list.

### How often is APE X85 updated?

The latest version of APE X85 is 2.0.24, and it was last updated on January 15, 2021. Users can expect updates to improve functionality and compatibility.

### What is the user rating for APE X85?

APE X85 has a user rating of 4.2 stars based on 6 ratings, indicating generally positive user sentiment.

## Version history (last 4 releases)

### 2.0.24 — 2021-01-15

Bug Fixes and support for the APE Flex Boost boost controller.

### 2.0.16 — 2020-08-04

Added support for flexboost controller

### 2.0.9 — 2019-12-19

Complete UI redesign, and the app now has a built in data logger.

### 1.0 — 2018-10-22

No release notes.

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## Related topics

[ape x85](https://appshunter.io/ios/topics/ape-x85) · [muru](https://appshunter.io/ios/topics/muru)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-01.*