Comparison

OBDLink vs MPG Tracker

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

Head to head
About

OBDLink

Transform your phone into a powerful car diagnostic tool. Read and clear trouble codes, monitor real-time engine data, and track fuel economy. Generate detailed reports for easy sharing and analysis.

Highlights
  • Read and clear diagnostic trouble codes
  • Display real-time vehicle data
  • Customizable dashboards
  • Estimate fuel economy
  • Log data to CSV
  • GPS tracking of vehicle parameters
  • Full diagnostic reports
Features
Read full description

***The OBDLink app exclusively works with OBDLink MX+, OBDLink CX, and OBDLink MX WiFi OBD adapters*** ***The app will NOT function with any other brand of OBD adapter.*** ***MX+ provides Unlimited Free OEM Add-ons, No in-app fees*** Convert your phone or tablet into a full-fledged diagnostic scan tool: read diagnostic trouble codes, clear the "Check Engine" light, check emissions readiness, estimate fuel economy and much more! Key features: - Check and clear diagnostic trouble codes - Read freeze frame data - Display real-time data (over 90 parameters!) - Customizable dashboards - Emissions readiness for each US state - Fuel economy MPG, l/100km or km/l calculation - Multiple trip meters - Log data to CSV format (compatible with Excel) - Retrieve vehicle information including VIN number and calibration ID - Oxygen Sensor Results (Mode $05) - On-board Monitoring Tests (Mode $06) - In-performance Tracking Counters (Mode $09) - GPS tracking - plot vehicle parameters on a map in real-time - Full diagnostic report that can be e-mailed or uploaded to Dropbox - English and Metric units - Support for English, Spanish, French, Greek, Italian, and Czech languages - Free unlimited updates - Ad-free * Continued use of GPS running in the background can dramatically decrease battery life.

About

MPG Tracker

Easily calculate and monitor your vehicle's fuel efficiency. Log your fill-ups to keep a detailed record of your gas mileage over time.

Highlights
  • Calculate gas mileage
  • Track fuel efficiency
  • Log fill-ups
  • Vehicle gas mileage record
Features
Read full description

Track your gas mileage, calculate miles per gallon, and see your fuel economy over time with MPG Tracker. Turn your odometer readings and gallons into a simple mileage log with a clear MPG graph. A SIMPLE FUEL LOG • Add your odometer reading and gallons when you fill up. • View calculated MPG and miles traveled for your entries. • Keep dated records of your vehicle's fuel usage. • Edit saved entries when you need to correct a reading. SEE YOUR MPG HISTORY Follow changes in fuel efficiency on a line graph, see your highest recorded MPG, and review past entries beneath the chart. The graph stays visible while you scroll through your mileage records. BUILT FOR EVERYDAY DRIVERS Keep a manual record of gas mileage for your daily commute, regular errands, or road trips. MPG Tracker focuses on miles and gallons, with a straightforward layout that makes it easy to add a fill-up and review your history. UNDERSTAND YOUR FUEL ECONOMY Miles per gallon, or MPG, is the distance driven divided by the gallons of fuel used. Logging consecutive fill-ups with consistent units helps you compare your vehicle's fuel economy over time. YOUR RECORDS, ON YOUR DEVICE No account or GPS tracking is required. Your mileage records are stored locally on your device. The app includes advertising, and ad privacy choices are available from the menu where applicable. Start a mileage log and get a clearer picture of your vehicle's fuel economy.

Screenshots

OBDLink4 screens
MPG Tracker3 screens

Verdict

The call

The clearest difference is in-app purchases: MPG Tracker at none against OBDLink's 10. OBDLink's advantage is rating (4.8 vs 4.3) and update cadence (every 2 months vs every 40 months). On price, ads, device support and iOS requirement 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. OBDLink sells 10 one-off in-app purchases. MPG Tracker asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

OBDLink holds the better App Store score, 4.8 against 4.3. That said, the two scores are not equally well evidenced: OBDLink has 13K ratings behind it against 3, so its average is the more settled of the two.

UpkeepUpdate frequency

OBDLink ships an update every 2 months, MPG Tracker every 40 months. The most recent releases landed on November 8, 2026 and November 3, 2026 respectively.

Scorecard5 real differences · 5 level
OBDLink versus MPG Tracker: the parameters behind the verdict, then further details
ParameterOBDLinkMPG Tracker
PriceFreeFree
Rating4.8 (13K ratings) — better4.3 (3 ratings)
Positive reviews61.7% of reviews—
Number of ratings13K — better3
Update frequencyEvery 2 months — betterEvery 40 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size65 MB13 MB
Age rating17+4+
DeveloperOBD Solutions LLCAvocado Toast Co.

Customer experience

OBDLink

All ratings12,975 ratings
Positive96.0%
Neutral2.4%
Negative1.7%
Written reviews243 reviews
Positive61.7%
Neutral12.8%
Negative25.5%

MPG Tracker

All ratings3 ratings
Positive66.7%
Neutral33.3%
Negative0.0%

Bugs and requests

OBDLink

Reported bugs

4 issues
  • App freezes or disconnects randomly
  • Trouble clearing error codes
  • Inconsistent data readings
  • Issues with firmware updates

Requested features

5 requests
  • Add CarPlay/Android Auto support
  • Improve Bluetooth/WiFi stability
  • Expand vehicle brand coverage
  • Enhance user interface and customization
  • Provide more detailed diagnostic information

MPG Tracker

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

OBDLink

One-time10
  • Ford 2016 Enhanced Diagnostics$14.99
  • Toyota 2007 Enhanced$14.99
  • Toyota 2008 Enhanced$14.99
Show 7 more
  • Ford 2018 Enhanced Diagnostics$14.99
  • Ford 2022 Enhanced$14.99
  • Ford 2023 Enhanced$14.99
  • Ford 2015 Enhanced Diagnostics$14.99
  • Ford 2024 Enhanced$14.99
  • Ford 2017 Enhanced Diagnostics$14.99
  • Toyota 2011 Enhanced$14.99
None

MPG Tracker

No in-app purchases

Questions

Is OBDLink free?
OBDLink is free to download, with in-app purchases available.
Is MPG Tracker free?
MPG Tracker is free to download, with no in-app purchases.
Which has better reviews, OBDLink or MPG Tracker?
OBDLink is rated higher. OBDLink averages 4.8 out of 5 from 13K ratings, while MPG Tracker averages 4.3 from 3 ratings.
Do OBDLink or MPG Tracker have ads?
Neither OBDLink nor MPG Tracker shows ads.
Which is updated more often, OBDLink or MPG Tracker?
OBDLink ships an update every 2 months, and MPG Tracker every 40 months. Most recently, OBDLink was updated on November 8, 2026 and MPG Tracker on November 3, 2026.

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