Comparison

Engine Link LE vs UniE85 Manager

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Engine Link LE

Transform your iPhone into a vehicle diagnostics tool. Monitor real-time performance, read and clear fault codes, and customize gauges to display the data you need. Requires a LELink adapter for OBD2 connection.

Highlights
  • Real-time vehicle data display
  • Read and clear OBD fault codes
  • Customizable gauges and dashboard
  • MPG widget and fuel efficiency tracking
  • Heads-up display (HUD) mode
  • Horsepower, torque, and acceleration metrics
  • Support for various OBD-II/EOBD vehicles
Features
Read full description

EngineLink LE will turn your iPhone/iPod into vehicle / car performance / diagnostics tool and scanner that uses a LELink (low Energy Bluetooth) adapter to connect to your OBD2 engine management / ECU. BENEFITS: * Emission Test. * See what your car is doing in real-time. * Read and clear OBD fault codes. * Display car performance and sensor data. * Customizable gauges, showing only the data you were interested in * NO in-app purchase and NO subscription fees! __________________ FEATURES: + Show and reset a DTC / CEL / fault code (current, pending and history) like a scan tool + Graph data + MPG widget to plot real time fuel efficiency + Heads up display / HUD mode for night time driving (mirror the display on your vehicle's windshield) + Can read Transmission Temperatures (vehicle dependent) + Horsepower/HP & Torque / acceleration + Boost / vacuum gauge + Engine speed / Engine RPM / Engine Load /Coolant / Fuel Tank + Customizable dashboard + Full configurable GUI with user choice of dial gauge, bar gauge, plot gauge, digital gauge, and on-off gauge as display elements + Full custom PID support. + Formula support. + Preloaded GM and Ford PID libraries + Preloaded standard PID library and Prius PID libraries . + User can add more libraries within the app or by using iTunes File Sharing + Multiple ECU support. Non-CAN, 11-bit CAN, and 29-bit CAN ECU bus types + Multiframe data support + Background color option + Email user log function (access by long pressing custom PID screen) + Multiple PID formula support + 0 to 60mph timer and quarter mile timer __________________ EngineLink supports all OBD-II and EOBD compliant vehicles sold worldwide. If in doubt check with your manufacturer first or look for 'OBD2' on written on a big white label in your engine bay. The app needs LELink or LELink2 (Bluetooth Low Energy) to work. The following iOS devices supports Bluetooth Low Energy BLE 4.0 and will work with LELink: iPhone 4s or later iPad (3rd generation) or later iPad mini or later iPod touch (5th generation) or later. You can check Developer WebSite for Adapter Guide: http://www.outdoor-apps.com/enginelink.html Drop us an email for any suggestions/questions you may have at support@ksolution.org. We will answer.

About

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.

Highlights
  • Wireless ethanol content viewing
  • CAN-BUS integration
  • E85 Mix Calculator
  • Bluetooth connectivity
  • Fuel blend calculations
Read full description

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

Engine Link LE4 screens
UniE85 Manager4 screens

Verdict

The call

The clearest difference is review sentiment: UniE85 Manager at 100% against Engine Link LE's 46%. UniE85 Manager also leads on rating (4.9 vs 3.2) and update cadence (every 2 months vs every 6 months). On price, ratings volume, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

UniE85 Manager holds the better App Store score, 4.9 against 3.2. Both are backed by a comparable volume of ratings — 12 and 27 respectively. Written reviews point the same way: 46% of Engine Link LE's written reviews are positive against 100% of UniE85 Manager's.

UpkeepUpdate frequency

Engine Link LE ships an update every 6 months, UniE85 Manager every 2 months. The most recent releases landed on October 10, 2026 and October 11, 2026 respectively.

Scorecard3 real differences · 7 level
Engine Link LE versus UniE85 Manager: the parameters behind the verdict, then further details
ParameterEngine Link LEUniE85 Manager
PriceFreeFree
Rating3.2 (12 ratings)4.9 (27 ratings) — better
Positive reviews46.2% of reviews100.0% of reviews — better
Number of ratings1227 — better
Update frequencyEvery 6 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS12.0 — better13.0
Further details — not scored
Size9 MB23 MB
Age rating4+4+
DeveloperK SOLUTION LLCCorporation Unitronic Inc

Customer experience

Engine Link LE

All ratings12 ratings
Positive50.0%
Neutral8.3%
Negative41.7%
Written reviews13 reviews
Positive46.2%
Neutral15.4%
Negative38.5%

UniE85 Manager

All ratings27 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews6 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Engine Link LE

No in-app purchases

None

UniE85 Manager

No in-app purchases

Questions

Is Engine Link LE free?
Engine Link LE is free to download, with no in-app purchases.
Is UniE85 Manager free?
UniE85 Manager is free to download, with no in-app purchases.
Which has better reviews, Engine Link LE or UniE85 Manager?
UniE85 Manager is rated higher. Engine Link LE averages 3.2 out of 5 from 12 ratings, while UniE85 Manager averages 4.9 from 27 ratings.
Do Engine Link LE or UniE85 Manager have ads?
Neither Engine Link LE nor UniE85 Manager shows ads.
Which is updated more often, Engine Link LE or UniE85 Manager?
Engine Link LE ships an update every 6 months, and UniE85 Manager every 2 months. Most recently, Engine Link LE was updated on October 10, 2026 and UniE85 Manager on October 11, 2026.

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