Comparison

LELink Scanner vs UJS OBDII

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

Head to head
About

LELink Scanner

This app acts as an engine diagnostics tool, allowing users to read and clear trouble codes, view real-time engine data, and customize performance gauges. It supports a wide range of OBD-II compliant vehicles and offers advanced features for both hobbyists and professionals.

Highlights
  • Read and clear trouble codes
  • View real-time engine and sensor data
  • Customizable gauges and dashboards
  • Smog readiness check
  • MPG and performance timers
  • Supports multiple ECU types
Features
Read full description

LELink is an engine performance and diagnostics tool for both automotive enthusiasts and professionals. Connecting to your iPhone/iPod, this scanner allows you to easily scan and clear engine codes, view and save real-time engine and performance data and much more. BENEFITS: * Read and clear trouble codes * Mode 6 * Smog Readiness Check * Display car performance and sensor data * Customizable gauges, showing only the data you are interested in * NO in-app purchase and NO subscription fees! __________________ Also 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 + 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 + Layout your own dashboard with the widgets / gauges you want, save /load layout + 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 + Gauge theme options + Background color options + Email user log function (access by long pressing custom PID screen) + Multiple PID formula support + 0 to 60mph timer and quarter mile timer __________________ LELink 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. ••••••••IMPORTANT INFO•••••••• LELink Scanner App is free to install but does require the purchase of the LELink or LELink2 OBD2 sensor to communicate with your vehicle. The sensor is sold separately in App or at http://www.outdoor-apps.com/store1.html. Drop us an email for any suggestions/questions you may have at support@ksolution.org. We will answer.

About

UJS OBDII

This professional car diagnostic app connects to UJS OBDII devices via Bluetooth to read and clear fault codes, monitor real-time vehicle performance, and analyze travel data. It supports multiple languages and offers high-speed, low-power data transmission.

Highlights
  • Fault code reading and clearing
  • Real-time instrument panel display
  • Vehicle performance testing
  • Detailed travel analysis
  • Multi-language support
  • High-speed data transmission
  • Low-power consumption
Features
Read full description

UJS OBD is exclusively designed to support UJS OBDII series products, serving as a professional car diagnostic and real-time monitoring application. It offers multi-language support, including English, Español, Русский, 日本語,and 中文,ensuring seamless usability for users worldwide. By connecting your smartphone to the UJS OBDII vehicle terminal via Bluetooth, the app enables comprehensive vehicle management—covering core functions such as fault code reading & clearing, real-time instrument panel display, vehicle performance testing, and detailed travel analysis. It also features high-speed data transmission capabilities, paired with outstanding low-power consumption and ultra-energy-saving performance, ensuring long-lasting use without excessive battery drain. Caution: 1. This app only supports adapters compatible with Bluetooth 4.0/5.0. 2. The range of parameters accessible for each vehicle varies and is determined by the vehicle’s own control unit, not by the UJS OBD app. 3. UJS OBD is specifically optimized for use with UJS OBDII series products; compatibility with other devices is not guaranteed.

Screenshots

LELink Scanner4 screens
UJS OBDII4 screens

Verdict

The call

LELink Scanner and UJS OBDII both sit at 5.0 stars, but that hides the real split: 100% of UJS OBDII's written reviews are positive against 50% of LELink Scanner's. On price, rating, ratings volume and update cadence 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

On the App Store both sit at effectively the same score — 5.0 for LELink Scanner against 5.0 for UJS OBDII. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews are what separate them: 50% of LELink Scanner's written reviews are positive against 100% of UJS OBDII's.

UpkeepUpdate frequency

LELink Scanner ships an update every 3 months, UJS OBDII every 6 weeks. The most recent releases landed on October 13, 2026 and October 11, 2026 respectively.

Scorecard1 real difference · 9 level
LELink Scanner versus UJS OBDII: the parameters behind the verdict, then further details
ParameterLELink ScannerUJS OBDII
PriceFreeFree
Rating5.0 (1 ratings)5.0 (1 ratings)
Positive reviews50.0% of reviews100.0% of reviews — better
Number of ratings11
Update frequencyEvery 3 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPod
Requires iOS12.0 — better13
Further details — not scored
Size11 MB81 MB
Age rating4+4+
DeveloperK SOLUTION LLCUJS INC

Customer experience

LELink Scanner

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

UJS OBDII

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

LELink Scanner

No in-app purchases

None

UJS OBDII

No in-app purchases

Questions

Is LELink Scanner free?
LELink Scanner is free to download, with no in-app purchases.
Is UJS OBDII free?
UJS OBDII is free to download, with no in-app purchases.
Which has better reviews, LELink Scanner or UJS OBDII?
LELink Scanner and UJS OBDII are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do LELink Scanner or UJS OBDII have ads?
Neither LELink Scanner nor UJS OBDII shows ads.
Which is updated more often, LELink Scanner or UJS OBDII?
LELink Scanner ships an update every 3 months, and UJS OBDII every 6 weeks. Most recently, LELink Scanner was updated on October 13, 2026 and UJS OBDII on October 11, 2026.

Other comparisons