Fuel vs APR PCU
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
APR PCU
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The APR Power Control Unit (PCU) is an inline tuning box designed to increase the horsepower and torque of the vehicle! The plug-and-play control unit piggybacks off the primary Engine Control Unit (ECU) to deliver more boost, fuel, and timing to increase output. Using your smart phone or the optional wireless controller, you can change performance levels on the fly, revert to stock, adjust throttle sensitivity levels, read emissions readiness, read and clear fault codes, and more.
Screenshots
Verdict
The clearest difference is iOS requirement: Fuel at 13.4 against APR PCU's 15.0. 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.
Fuel ships an update every 10 months, APR PCU every 5 months. The most recent releases landed on October 24, 2026 and October 4, 2026 respectively.
| Parameter | Fuel | APR PCU |
|---|---|---|
| Price | Free | Free |
| Rating | 3.1 (33 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 33 — better | — |
| Update frequency | Every 10 months | Every 5 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 13.4 — better | 15.0 |
| Further details — not scored | ||
| Size | 20 MB | 141 MB |
| Age rating | 4+ | 4+ |
| Developer | Dmac Mobile Developments, LLC | Holley Performance Products |
In-app purchases
Fuel
No in-app purchases
APR PCU
No in-app purchases
