JB4 Mobile vs UniE85 Manager
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
JB4 Mobile
This app acts as a mobile data logger and display for vehicles equipped with a JB4 tuner. It allows users to monitor and log various engine parameters, view data in real-time, and adjust settings for performance tuning.
- Live gauge monitoring
- Data logging and graphing
- User adjustable settings
- WMI settings modification
- On-the-fly map switching
- Code reading and deletion
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The brand new JB4 Mobile application is finally ready for public release and has lots of great new features including: *Gauge theme customizations *Built-in raw CSV data viewer *Revamped User Adj./WMI data editors *New modern UI completely rewritten from the ground up *More seamless integration with our backend servers JB4 Connect Kit Users: 1) Install the Connect Kit per the installation guide for your vehicle 2) Create your account/sign in with this app 3) Ensure JB4 Mobile has all requested permissions 4) Tap the Connect button in JB4 Mobile About The App: JB4 Mobile is a mobile data logger and display for use with the JB4 tuner from Burger Motorsports. JB4 Mobile allows you to monitor and log multiple parameters from your JB4 equipped car. Parameters such as boost, rpm, fuel trims, air/fuel ratios, ignition advance and much more are available. Current Features: Live gauges Data logging Data graphing Log export via email Code reading/deletion Modify User Adj. (boost, fuel, etc.) settings Modify WMI settings Switch maps on the fly Auto WOT logging JB4 Firmware Updating JB4 ® is a registered trademark of Burger Motorsports Inc ® and is used with written permission.
UniE85 Manager
Monitor your vehicle's ethanol content wirelessly via Bluetooth. Calculate fuel blends for optimal performance and integrate data over your car's CAN-BUS with compatible hardware. Requires specific modules and software for full functionality.
- Wireless ethanol content viewing
- CAN-BUS integration
- E85 Mix Calculator
- Bluetooth connectivity
- Fuel blend calculations
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Unitronic's E85 Manager allows you to wirelessly view your current ethanol content, and integrate ethanol content over your vehicle's CAN-BUS when combined together with Unitronic's UniFLEX module, an Ethanol Content Sensor, and ECU Performance Software calibrated to add Flex Fuel functionality, while using your mobile device's Bluetooth connection. The included E85 Mix Calculator allows you to calculate current and future gas/ethanol content blends to ensure you can achieve your target ethanol content using your fuel tank size, current fuel level, current ethanol content, target ethanol content, and more! NOTE: This app requires a custom Bluetooth module (Unitronic UniFLEX) to allow for wireless ethanol content viewing. This app requires customized ECU Performance Software calibrated to add Flex Fuel functionality over your vehicle's CAN-BUS.
Screenshots
Verdict
The clearest difference is review sentiment: UniE85 Manager at 100% against JB4 Mobile's 52%. UniE85 Manager also leads on price (Free vs $27.99) and rating (4.8 vs 3.8). JB4 Mobile's advantage is chart position (#2 vs unranked) and ratings volume (239 vs 40). On update cadence, 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
UniE85 Manager is free to download; JB4 Mobile costs $27.99 up front. Neither carries in-app purchases, so what you see is what you pay.
UniE85 Manager holds the better App Store score, 4.8 against 3.8. That said, the two scores are not equally well evidenced: JB4 Mobile has 239 ratings behind it against 40, so its average is the more settled of the two. Written reviews point the same way: 52% of JB4 Mobile's written reviews are positive against 100% of UniE85 Manager's.
JB4 Mobile ships an update every 3 months, UniE85 Manager every 2 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.
| Parameter | JB4 Mobile | UniE85 Manager |
|---|---|---|
| Price | $27.99 | Free — better |
| Rating | 3.8 (239 ratings) | 4.8 (40 ratings) — better |
| Positive reviews | 52.4% of reviews | 100.0% of reviews — better |
| Number of ratings | 239 — better | 40 |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Best chart rank | #2 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 13.0 — better |
| Further details — not scored | ||
| Size | 24 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | Dmac Mobile Developments, LLC | Unitronic |
Customer experience
JB4 Mobile
UniE85 Manager
Bugs and requests
JB4 Mobile
Reported bugs
5 issues- App crashes
- Can't connect to server
- Mirrored/inverted display
- Compatibility issues with new iOS versions
- Trouble logging in
Requested features
5 requests- Add CarPlay support
- Allow customizing map names
- Add more gauge styling options
- Improve UI and layout
- Integrate with Apple Carplay
UniE85 Manager
Not enough reviews yet to summarise bugs or requests.
In-app purchases
JB4 Mobile
No in-app purchases
UniE85 Manager
No in-app purchases
