Comparison

Engine Link LE vs FastR

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

FastR

Measure your vehicle's acceleration performance with this app. It automatically tests 0-60 and quarter-mile times with millisecond accuracy. Compete with others on a real-time leaderboard and save results for different car models.

Highlights
  • Hands-free, automated acceleration testing
  • 0-60 and Quarter mile time measurement
  • Millisecond accuracy
  • Real-time user ranking
  • Save times for different car models
Features
Read full description

FastR is the #1 vehicle acceleration performance app in the game! Test your vehicle's 0-60 and Quarter mile times, in a hands-free, fully automated manner. You can also post your acceleration times to our leaderboard to earn bragging rights. - Features accuracy to the millisecond - Displays your rank amongst other users in real time - Lets you save acceleration times from different car models See how your vehicle's acceleration performance compares with others.

Screenshots

Engine Link LE4 screens
FastR4 screens

Verdict

The call

The clearest difference is rating: FastR at 4.4 against Engine Link LE's 3.2. FastR also leads on ratings volume (290 vs 12). Engine Link LE's advantage is in-app purchases (none vs 2) and review sentiment (46% vs 38%). On price, update cadence, ads 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

Both are free to download. FastR sells 2 one-off in-app purchases. Engine Link LE asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

FastR holds the better App Store score, 4.4 against 3.2. That said, the two scores are not equally well evidenced: FastR has 290 ratings behind it against 12, so its average is the more settled of the two. Written reviews complicate that: 46% of Engine Link LE's written reviews are positive against 38% of FastR's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Engine Link LE ships an update every 6 months, FastR every 5 months. The most recent releases landed on October 10, 2026 and October 15, 2026 respectively.

Scorecard6 real differences · 4 level
Engine Link LE versus FastR: the parameters behind the verdict, then further details
ParameterEngine Link LEFastR
PriceFreeFree
Rating3.2 (12 ratings)4.4 (290 ratings) — better
Positive reviews46.2% of reviews — better37.5% of reviews
Number of ratings12290 — better
Update frequencyEvery 6 monthsEvery 5 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPod
Requires iOS12.0 — better15.0
Further details — not scored
Size9 MB20 MB
Age rating4+4+
DeveloperK SOLUTION LLCErhies Fekarurhobo

Customer experience

Engine Link LE

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

FastR

All ratings290 ratings
Positive82.8%
Neutral6.6%
Negative10.7%
Written reviews72 reviews
Positive37.5%
Neutral15.3%
Negative47.2%

Bugs and requests

Engine Link LE

Not enough reviews yet to summarise bugs or requests.

FastR

Reported bugs

10 issues
  • Network connection errors preventing vehicle selection
  • Facebook login buffering and not connecting
  • App fails to record and save acceleration times
  • GPS speed readings lag significantly behind actual speed
  • App crashes on launch or during use
Show 5 more
  • Settings not saving properly without login
  • Leaderboard functionality broken
  • App doesn't start recording until vehicle is already at speed
  • Inconsistent timing results on identical driving conditions
  • Loading screen stuck on 'select vehicle' with persistent network errors

Requested features

10 requests
  • GPS-based auto-start feature instead of manual start button
  • Audio cues for 'ready, set, go' countdown
  • Alternative login methods beyond Facebook
  • Save vehicle selection for future sessions
  • Support for multiple vehicles per account
Show 5 more
  • Social media sharing integration
  • In-app instructions and user guide
  • Add missing car models (Tesla Model Y, Russian models, high-spec variants)
  • Allow custom vehicle entry if model not found
  • Real-time sound feedback during acceleration test

In-app purchases

None

Engine Link LE

No in-app purchases

2 purchases

FastR

One-time2
  • 10 Leaderboard Posts$3.99
  • Unlock 1/4 Mile Timing$5.99

Questions

Is Engine Link LE free?
Engine Link LE is free to download, with no in-app purchases.
Is FastR free?
FastR is free to download, with in-app purchases available.
Which has better reviews, Engine Link LE or FastR?
FastR is rated higher. Engine Link LE averages 3.2 out of 5 from 12 ratings, while FastR averages 4.4 from 290 ratings.
Do Engine Link LE or FastR have ads?
Neither Engine Link LE nor FastR shows ads.
Which is updated more often, Engine Link LE or FastR?
Engine Link LE ships an update every 6 months, and FastR every 5 months. Most recently, Engine Link LE was updated on October 10, 2026 and FastR on October 15, 2026.

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