Fuel vs APE X85
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Fuel
Monitor your vehicle's ethanol concentration and fuel temperature in real-time. This app wirelessly connects to a compatible Bluetooth module, freeing up your device's port for simultaneous charging and monitoring. It includes an ethanol fill-up concentration calculator and customizable display views.
- Real-time ethanol concentration monitoring
- Real-time fuel temperature monitoring
- Wireless Bluetooth connectivity
- Ethanol fill-up concentration calculator
- Fahrenheit or Celsius display options
- Two display views
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***Note that this app requires a custom Bluetooth module to function. Info on the module can be found here: https://fuel-it.com/products/fuel-it-bluetooth-flex-fuel-analyzer The Fuel-It ECA gives you realtime feedback from your Continental Ethanol sensor. Wireless communication frees up your device's port so you can monitor and charge at the same time. Features: Ethanol concentration monitoring Fuel temperature monitoring 2 Display Views Fuel temperature display in Fahrenheit or Celsius Ethanol fill-up concentration calculator
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 Fuel's 50%. APE X85 also leads on rating (4.3 vs 3.1) and iOS requirement (11.0 vs 13.4). Fuel's advantage is ratings volume (34 vs 7). On price, update cadence, 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, 4.3 against 3.1. Both are backed by a comparable volume of ratings — 34 and 7 respectively. Written reviews point the same way: 50% of Fuel's written reviews are positive against 100% of APE X85's.
Fuel ships an update every 10 months, APE X85 every 8 months. The most recent releases landed on November 6, 2026 and November 2, 2026 respectively.
| Parameter | Fuel | APE X85 |
|---|---|---|
| Price | Free | Free |
| Rating | 3.1 (34 ratings) | 4.3 (7 ratings) — better |
| Positive reviews | 50.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 34 — better | 7 |
| Update frequency | Every 10 months | Every 8 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 13.4 | 11.0 — better |
| Further details — not scored | ||
| Size | 20 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | Dmac Mobile Developments, LLC | AlternativePerformanceEng |
Customer experience
Fuel
APE X85
In-app purchases
Fuel
No in-app purchases
APE X85
No in-app purchases
