# eFlexApp — Monitor your eFlexFuel Device!

> Real-time monitoring and adjustment for eFlexFuel devices via Bluetooth. (iPhone/iPad app by StepOne Tech Ltd.)

- Source: https://appshunter.io/ios/app/eflexapp/id1526677191 (this page in markdown: same URL + `.md`)
- Developer: [StepOne Tech Ltd](https://appshunter.io/developer/1388519134)
- Category: Utilities
- Price: Free
- Rating: 3.40/5 from 8 App Store ratings · 3 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.6 · 58 MB
- Languages: American English
- Released: 2020-08-07
- Data updated: 2026-07-09
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/eflexapp/id1526677191/reviews.md

## What is eFlexApp?

With eFlexApp you can monitor your eFlexFuel device in real time. eFlexApp recognizes your eFlexFuel device version and offers different features with each product. The app also enables adjusting of eFlexPlus and eFlexPro devices. Change language (English, French, Finnish), temperature unit (°F/°C) and theme (light/dark).
 

eFlexEco, eFlexBlue and eFlexFuel

MONITOR: ethanol content, duty cycle, fuel temperature, ambient engine temperature, injector activity & cold enrichment, (engine RPM in eFlexEco Firmware 11.0+) 
CHECK: device status


eFlexPlus Direct, eFlexBlue Direct
 
MONITOR: ethanol content, engine RPM, duty cycle, fuel temperature, ambient engine temperature, injector activity & cold enrichment
CHECK: device status


eFlexPlus and eFlexMoto Plus

MONITOR: ethanol content, engine RPM, duty cycle, fuel temperature, ambient engine temperature, injector activity & cold enrichment 
ADJUST: RPM based enrichment with driving mode selection (save a custom driving mode setting created with eFlexTuner software) & cold enrichment (save a custom setting created with eFlexTuner software) 
CHECK: device status, startup information 
 

eFlexPro and eFlexMoto Pro

MONITOR: ethanol content, engine RPM, duty cycle, fuel temperature, ambient engine temperature, injector activity & cold enrichment 
ADJUST: RPM based enrichment with driving mode selection (save up to three custom driving mode settings created with eFlexTuner software) & cold enrichment (save a custom setting created with eFlexTuner software) 
CHECK: device status, startup information
 

eFlexApp communicates with your eFlexFuel device via Bluetooth. Permission to use Bluetooth is required. 
 
Please contact support@eflexfuel.com if you have any feedback! 


Developed by StepOne Tech Ltd

## Key features

- Real-time device monitoring
- Adjustable settings (language, temp, theme)
- Ethanol content tracking
- Engine temperature monitoring
- Device status checks
- Bluetooth connectivity

## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/eflexapp/id1526677191/reviews.md

### 1/5 — Tracking

*2023-04-06*

Give your location or else app won’t work :/

### 4/5 — Needs improvement

*2022-06-20*

This app needs improvement, things like the gauges in screen rotation, data logging, and extra gauges. Gauges in the home menu go from being a 8k rpm layout to a 16k limit when the screen is rotated to landscape and back to portrait. Data logging is real time only there’s no saving the data is displays, it also stops recording when throttle is off(deceleration) and continues when throttle is applied but has a tendency to not record anything even when you apply throttle or just idle. Extra gauges can be things like individual injector duty cycle, amount of extra fuel it applies when on E, and the ability to maybe use a external obd2 dongle to gather more data and record in app for data logging.

### 3/5 — temps are off

*2021-03-23*

I’ve been using the app for a while to track ethanol and temps. It’s been off on the temps. Showing that my car only ever reaches 50degrees celsius (122 degrees Fahrenheit). Just a bit worried some of the other gages being off as well.

## Frequently asked questions about eFlexApp

### What eFlexFuel devices does eFlexApp support?

eFlexApp supports a range of eFlexFuel devices including eFlexEco, eFlexBlue, eFlexFuel, eFlexPlus Direct, eFlexBlue Direct, eFlexPlus, eFlexMoto Plus, eFlexPro, and eFlexMoto Pro. The specific features available will vary based on your device version.

### What information can I monitor with eFlexApp?

You can monitor ethanol content, duty cycle, fuel temperature, ambient engine temperature, injector activity, and cold enrichment. Some devices also provide engine RPM and startup information.

### Can I adjust settings on my eFlexFuel device with eFlexApp?

Yes, eFlexApp allows adjustments for eFlexPlus and eFlexPro devices. You can modify RPM-based enrichment, driving modes, and cold enrichment settings, including saving custom configurations.

### What languages are supported by eFlexApp?

eFlexApp supports multiple languages, including English, French, and Finnish, allowing users to select their preferred language for the app interface.

### How does eFlexApp connect to my eFlexFuel device?

eFlexApp communicates with your eFlexFuel device using Bluetooth. Therefore, permission to use Bluetooth is required for the app to function correctly.

### What is the rating of eFlexApp?

eFlexApp has a rating of 3.4 stars based on 8 user ratings. This provides an indication of general user satisfaction with the application.

### How often is eFlexApp updated?

The latest version of eFlexApp is 2.2.13, which was last updated on February 9, 2026. This suggests a relatively recent update, though specific update frequency is not detailed.

### Is eFlexApp available on Android devices?

Based on the provided data, eFlexApp is supported on iPhone and iPod. Information regarding Android compatibility is not available in this dataset.

## Version history (last 5 releases)

### 2.2.13 — 2026-02-09

- Added support for new eFlexFuel devices
- UI improvements

### 2.2.12 — 2025-10-13

- UI improvements

### 2.2.11 — 2025-10-09

- Performance improvements

### 2.2.10 — 2025-09-16

- Improved Fuel log UI

### 2.2.9 — 2025-08-27

Performance improvements

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## Related topics

[eflexapp](https://appshunter.io/ios/topics/eflexapp) · [eflexfuel](https://appshunter.io/ios/topics/eflexfuel) · [eflex](https://appshunter.io/ios/topics/eflex) · [flex fuel](https://appshunter.io/ios/topics/flex-fuel)

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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 2026-07-09.*