APE X85 vs eFlexApp
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
APE X85
This application enables users to monitor and configure a Flex Fuel Conversion module for gasoline engines, allowing them to run E85 fuel. It offers advanced tuning for ethanol delivery and includes a data logger. The app is also compatible with the APE Multi-gauge module.
- Flex Fuel conversion module monitoring
- E85 fuel compatibility
- Advanced ethanol delivery tuning
- RPM range configuration
- Built-in data logger
- APE Multi-gauge module support
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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.
eFlexApp
Monitor your eFlexFuel device in real-time, with features varying by device version. Adjust settings like language, temperature units, and theme. Track ethanol content, engine temperature, and more, depending on your specific eFlexFuel model.
- Real-time device monitoring
- Adjustable settings (language, temp, theme)
- Ethanol content tracking
- Engine temperature monitoring
- Device status checks
- Bluetooth connectivity
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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
Screenshots
Verdict
The clearest difference is review sentiment: APE X85 at 100% against eFlexApp's 25%. APE X85 also leads on rating (4.2 vs 3.2) and device support (3 vs 1). eFlexApp's advantage is update cadence (monthly vs every 8 months). On price, ratings volume, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
APE X85 holds the better App Store score, 4.2 against 3.2. Both are backed by a comparable volume of ratings — 6 and 10 respectively. Written reviews point the same way: 100% of APE X85's written reviews are positive against 25% of eFlexApp's.
APE X85 ships an update every 8 months, eFlexApp monthly. The most recent releases landed on October 11, 2026 and October 17, 2026 respectively.
| Parameter | APE X85 | eFlexApp |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (6 ratings) — better | 3.2 (10 ratings) |
| Positive reviews | 100.0% of reviews — better | 25.0% of reviews |
| Number of ratings | 6 | 10 — better |
| Update frequency | Every 8 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 11.0 — better | 26.6 |
| Further details — not scored | ||
| Size | 25 MB | 53 MB |
| Age rating | 4+ | 4+ |
| Developer | AlternativePerformanceEng | StepOne Tech Ltd |
Customer experience
APE X85
eFlexApp
In-app purchases
APE X85
No in-app purchases
eFlexApp
No in-app purchases
