Comparison

iSmartDiag vs LELink Scanner

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

Head to head
About

iSmartDiag

This app provides powerful automotive diagnostic functions for mechanics, drivers, and DIYers. It connects via Bluetooth to scan over 110 vehicle brands, read/erase fault codes, and perform active tests. Save time and costs with detailed reports and maintenance functions.

Highlights
  • 110+ vehicle brands coverage
  • Full system scan & diagnosis
  • Bi-directional control
  • Read/erase fault codes
  • Maintenance functions
  • Data stream graph display
  • Bluetooth connectivity
Features
Read full description

According to connect with mobile or tablet bluetooth, the iSmartDiag can work on vehicles properly and provide powerful diagnostic functions to mechanics. In addition, the iSmartDiag can help drivers, DIYers and workshops save plenty of time and costs. Main Features: 1. 110+ vehicle brands coverage with full system scan & diagnosis 2. Support latest CANFD& DoIP communication protocols diagnosis 3. Bi-directional control and easy pin-point faults 4. Support full system scan & diagnosis: engine, transmission, SRS, TPMS, ABS, ESP, IMMO and etc. 5. Full system basic diagnostic functions including read/erase fault code, read system information, freeze frame data, read data stream, active tests. 6. iSmartDiag510 covered 13 maintenance functions; iSmartDiag510Pro covered 28 maintenance function, like service reset, EPB, DPF, injector coding etc. 7. Data stream graph display and comparison 8. Support fault code emailing function to certain email address(This function is used to send diagnostic report email to drivers by workshop), diagnostic report and vehicle quick scan report. 9. Bluetooth connection based on mobile devices, efficiency connection distance within 10 meters. 10. Support one-touch diagnostic complaint. Welcome to the forefront of automotive diagnostic technology. Vident Tech offers state-of-the-art solutions based on OBD and OBDII. We are on par with renowned brands like Autel, Xtool, and Launch, providing you with accurate and reliable results for mileage checking, emission status, and engine diagnostics. Vident Tech aimed to deliver the best diagnostic solutions for mechanics. Whether it's routine maintenance or emergency situations, with outstanding performance and user-friendly interfaces, Vident products can help you quickly identify issues. Our advanced diagnostic tool, the iSmart Diag application, allows you to effortlessly access to vehicle data and generate comprehensive reports. Whether it's reading mileage, evaluating emissions, or diagnosing engine issues, iSmart Diag can meet your needs. By choosing Vident Tech, you'll receive dependable and precise solutions that enhance your driving experience. Don't missing the opportunity to experience Vident Tech's advanced diagnostic technology. We are your trusted partner in the field of automotive diagnostics. Let's explore the convenient features of iSmart Diag together and effortlessly resolve your car repair issues. Download the iSmart Diag application now and revolutionize the way you maintain and repair your car. iSmart Diag is an intelligent automotive diagnostic application that helps you monitor and address car problems in real-time, optimizing your driving experience. It offers comprehensive and accurate diagnostic functions, including reading and clearing fault codes, monitoring sensor data, and active tests. With precise diagnostic results, help to better understand vehicle status and take timely maintenance measures to avoid potential failures. It can monitor various parameters of your vehicle in real-time, such as speed, fuel consumption, assisting you in gaining a comprehensive understanding of your vehicle. Additionally, it provides real-time data charts and reports, enabling you to analyze your vehicle's operating conditions more clearly. The iSmart Diag interface is designed to be simple and intuitive, ensuring ease and convenience of operation. Which allows entry level users to perform automotive diagnostics and troubleshooting. Whether you're an automotive enthusiasts or drivers, you can easily get started with it. Vident Tech team will continuously updates and optimizes the application's features to provide better user experience and functional support. Additionally, we offer timely technical support and online help documentation to ensure that you receive the necessary assistance and guidance while using iSmart Diag.

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.

Screenshots

iSmartDiag4 screens
LELink Scanner4 screens

Verdict

The call

The clearest difference is rating: LELink Scanner at 5.0 against iSmartDiag's 1.0. LELink Scanner also leads on review sentiment (50% vs 25%) and iOS requirement (12.0 vs 15.5). iSmartDiag's advantage is update cadence (every 4 days vs every 3 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

LELink Scanner holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews point the same way: 25% of iSmartDiag's written reviews are positive against 50% of LELink Scanner's.

UpkeepUpdate frequency

iSmartDiag ships an update every 4 days, LELink Scanner every 3 months. The most recent releases landed on October 27, 2026 and October 13, 2026 respectively.

Scorecard4 real differences · 6 level
iSmartDiag versus LELink Scanner: the parameters behind the verdict, then further details
ParameteriSmartDiagLELink Scanner
PriceFreeFree
Rating1.0 (2 ratings)5.0 (1 ratings) — better
Positive reviews25.0% of reviews50.0% of reviews — better
Number of ratings2 — better1
Update frequencyEvery 4 days — betterEvery 3 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.512.0 — better
Further details — not scored
Size614 MB11 MB
Age rating9+4+
DeveloperShenzhen Vident Technology Co., LtdK SOLUTION LLC

Customer experience

iSmartDiag

All ratings2 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews4 reviews
Positive25.0%
Neutral0.0%
Negative75.0%

LELink Scanner

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

In-app purchases

None

iSmartDiag

No in-app purchases

None

LELink Scanner

No in-app purchases

Questions

Is iSmartDiag free?
iSmartDiag is free to download, with no in-app purchases.
Is LELink Scanner free?
LELink Scanner is free to download, with no in-app purchases.
Which has better reviews, iSmartDiag or LELink Scanner?
LELink Scanner is rated higher. iSmartDiag averages 1.0 out of 5 from 2 ratings, while LELink Scanner averages 5.0 from 1 ratings.
Do iSmartDiag or LELink Scanner have ads?
Neither iSmartDiag nor LELink Scanner shows ads.
Which is updated more often, iSmartDiag or LELink Scanner?
iSmartDiag ships an update every 4 days, and LELink Scanner every 3 months. Most recently, iSmartDiag was updated on October 27, 2026 and LELink Scanner on October 13, 2026.

Other comparisons