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I bought my Proflex second hand. I saw the app ratings and my expectations were very low. However, the app does work, it shows the ethanol content, I had to reload the app initially to show the E85 content but the app does its job so far.
★★★★★Shrayus Reddy· Feb 18, 2026
App was Garbage Before, Update Works Great Now, The Re-Scan Feature Works
★★★★☆Meric Kilic· Sep 11, 2022
Much better user interface than previous app, hope they add fuel temperature display as well, like the AFE kit does. Maybe even fine-tuning options of fueling too? App is crashing since new update.
★☆☆☆☆Breckon Carter· Jun 22, 2022
Opening the app is fine. Once turning the key on to see how much ethanol I have in my car pressed on the device after a little bit the app couldn't connect. Was so disappointed. I hope this is just a glitch.
★☆☆☆☆Jerard Simmons· Dec 17, 2025
An app that never connects to its own devices nor does it have any useful or redeeming qualities. They sell you on it being able to show you live E85 readings, but the app hasn't done that since the first month...
★☆☆☆☆S Burrell· Jun 17, 2023
Absolutely just junk! Works when it wants to. Regretful purchase.
★☆☆☆☆JONATHAN J.· Apr 27, 2023
Worked fine before the most recent update, and now it won't even see my Device
Google Play Rankings for PROFLEX
This app is not ranked
Technologies used by PROFLEX
PROFLEX is requesting 16 permissions and we don't have library information (yet).
We haven't collected library information for this app yet. You can use the AppBrain
Ad Detector app to detect libraries in apps installed on your device.
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