PROFLEX Connect vs APE X85
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PROFLEX Connect
This app allows you to monitor your vehicle's fuel system performance in real-time. It displays device settings and helps locate nearby E85 fuel stations for convenient ethanol blending.
- Real-time device setting display
- E85 station locator
- Fuel ratio monitoring
- Performance flex fuel system integration
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PROFLEX Commander is a bolt on performance flex fuel system allowing your vehicle to make big power with ethanol right out of the box. No tuning needed. The PROFLEX Commander and FLEXLINK family of devices allow you to run any blend of gas and E85 at anytime, while always delivering the exact fuel ratio to your vehicle. The PROFLEX Connect app allows you to view your device settings in real-time, and even help you find a nearby e85 station.
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.
Screenshots
Verdict
The clearest difference is review sentiment: APE X85 at 100% against PROFLEX Connect's 38%. APE X85 also leads on rating (4.3 vs 2.8). PROFLEX Connect's advantage is update cadence (weekly vs every 8 months) and ratings volume (57 vs 7). On price, ads, in-app purchases and monetization model 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, 4.3 against 2.8. That said, the two scores are not equally well evidenced: PROFLEX Connect has 57 ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 38% of PROFLEX Connect's written reviews are positive against 100% of APE X85's.
PROFLEX Connect ships an update weekly, APE X85 every 8 months. The most recent releases landed on November 6, 2026 and November 2, 2026 respectively.
| Parameter | PROFLEX Connect | APE X85 |
|---|---|---|
| Price | Free | Free |
| Rating | 2.8 (57 ratings) | 4.3 (7 ratings) — better |
| Positive reviews | 37.9% of reviews | 100.0% of reviews — better |
| Number of ratings | 57 — better | 7 |
| Update frequency | Weekly — better | Every 8 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.4 | 11.0 — better |
| Further details — not scored | ||
| Size | 22 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | ADVANCED FUEL DYNAMICS | AlternativePerformanceEng |
Customer experience
PROFLEX Connect
APE X85
In-app purchases
PROFLEX Connect
No in-app purchases
APE X85
No in-app purchases
