Comparison

Engine Link vs Flash Cleaner Pro

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

Head to head
About

Engine Link

Transform your iPhone into a powerful vehicle diagnostics tool. Monitor real-time performance, read and clear fault codes, and customize your dashboard with detailed sensor data. Supports emission testing and offers a HUD mode for night driving.

Highlights
  • Real-time vehicle monitoring
  • Read and clear OBD fault codes
  • Customizable gauges and dashboards
  • MPG widget and fuel efficiency plotting
  • Heads up display (HUD) mode
  • Horsepower, torque, and acceleration metrics
  • Custom PID support
Features
Read full description

EngineLink will turn your iPhone/iPod into vehicle / car performance / diagnostics tool and scanner that uses an OBD II WIFI adapter or a low Energy Bluetooth adapter (LELink, LELink2, Carista, Viecar) to connect to your OBD2 engine management / ECU. The only iPhone app does custom PID, now supports Torque custom PID file. 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 * Top Ranked Car App * 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 dependant) + 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 an ELM compatible Bluetooth Low Energy (for iPhone4s and later) or Wi-Fi adapter to work. You can check Developer WebSite for Adapter Guide: http://www.outdoor-apps.com/enginelink.html *** If you have Bluetooth OBD adaptor, please contact support@ksolution.org for instruction before you purchase this app. Drop us an email for any suggestions/questions you may have at support@ksolution.org. We will answer.

About

Flash Cleaner Pro

Features
Read full description

Flash Cleaner Pro helps you organize your photo library and free up storage space quickly and safely. Key Features: • Duplicate Photo Cleaner Find and remove duplicate photos to recover valuable storage space. • Similar Photo Detection Identify visually similar photos and keep only the best shots. • Video Cleaner Locate large and duplicate videos that take up unnecessary space. • Contact Cleanup Merge duplicate contacts and organize your address book. • Storage Overview Monitor device storage usage and understand what's consuming space. • Fast & Easy Clean your library with an intuitive and user-friendly interface. Why Choose Flash Cleaner Pro? - Smart duplicate detection - Easy photo and video management - Secure and private processing - Quick storage recovery - Simple and modern design Privacy First Your photos, videos, and contacts remain under your control. Flash Cleaner Pro processes data on your device and does not upload personal content without permission. Download Flash Cleaner Pro and enjoy a cleaner, more organized iPhone today.

Screenshots

Engine Link4 screens
Flash Cleaner Pro3 screens

Verdict

The call

The clearest difference is price: Flash Cleaner Pro at Free against Engine Link's $5.99. Flash Cleaner Pro also leads on update cadence (every 2 weeks vs every 2 months). Engine Link's advantage is iOS requirement (12.0 vs 17.0). On ads, in-app purchases and device support 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

Flash Cleaner Pro is free to download; Engine Link costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Engine Link ships an update every 2 months, Flash Cleaner Pro every 2 weeks. The most recent releases landed on October 29, 2026 and October 19, 2026 respectively.

Scorecard3 real differences · 7 level
Engine Link versus Flash Cleaner Pro: the parameters behind the verdict, then further details
ParameterEngine LinkFlash Cleaner Pro
Price$5.99Free — better
Rating2.9 (62 ratings) — better—
Positive reviews38.2% of reviews—
Number of ratings62 — better—
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPodiPhone, iPad
Requires iOS12.0 — better17.0
Further details — not scored
Size10 MB23 MB
Age rating4+4+
DeveloperK SOLUTION LLC虎 杨

Bugs and requests

Engine Link

Reported bugs

4 issues
  • App crashes on connection
  • Fails to read/clear error codes
  • Inaccurate sensor readings
  • Compatibility issues with certain OBD dongles

Requested features

5 requests
  • Add support for more vehicle types
  • Improve user interface and customization options
  • Add more PID support, especially for EVs
  • Implement language localization
  • Improve data logging and export capabilities

Flash Cleaner Pro

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Engine Link

No in-app purchases

None

Flash Cleaner Pro

No in-app purchases

Questions

Is Engine Link free?
Engine Link costs $5.99, with no in-app purchases.
Is Flash Cleaner Pro free?
Flash Cleaner Pro is free to download, with no in-app purchases.
Do Engine Link or Flash Cleaner Pro have ads?
Neither Engine Link nor Flash Cleaner Pro shows ads.
Which is updated more often, Engine Link or Flash Cleaner Pro?
Engine Link ships an update every 2 months, and Flash Cleaner Pro every 2 weeks. Most recently, Engine Link was updated on October 29, 2026 and Flash Cleaner Pro on October 19, 2026.

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