USE Mobile vs PROFLEX Connect
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
USE Mobile
Monitor and control your building portfolio remotely. Receive real-time sensor updates, alerts, and notifications. Manage thermostat settings and boiler functions from your iOS device.
- Real-time portfolio monitoring
- Sensor updates and alerts
- Thermostat control
- Boiler management
- Mobile portal access
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Control and monitor your building portfolio on your iOS device. Watch over your entire building portfolio in real-time from a single mobile portal. Get real-time sensor updates, alerts and notifications. Manage your thermostat settings, control your space temperatures and your boiler on-the go.
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.
Screenshots
Verdict
The clearest difference is review sentiment: USE Mobile at 100% against PROFLEX Connect's 39%. USE Mobile also leads on rating (4.0 vs 2.8). PROFLEX Connect's advantage is update cadence (weekly vs every 2 months) and ratings volume (54 vs 1). 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.
USE Mobile holds the better App Store score, 4.0 against 2.8. That said, the two scores are not equally well evidenced: PROFLEX Connect has 54 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of USE Mobile's written reviews are positive against 39% of PROFLEX Connect's.
USE Mobile ships an update every 2 months, PROFLEX Connect weekly. The most recent releases landed on September 11, 2026 and September 18, 2026 respectively.
| Parameter | USE Mobile | PROFLEX Connect |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (1 ratings) — better | 2.8 (54 ratings) |
| Positive reviews | 100.0% of reviews — better | 39.3% of reviews |
| Number of ratings | 1 | 54 — better |
| Update frequency | Every 2 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 11.0 — better | 12.4 |
| Further details — not scored | ||
| Size | 6 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | US Energy Group | ADVANCED FUEL DYNAMICS |
Customer experience
USE Mobile
PROFLEX Connect
In-app purchases
USE Mobile
No in-app purchases
PROFLEX Connect
No in-app purchases
