Comparison

ChkOBD OBD2 Analyzer vs OBDGO PRO

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

Head to head
About

ChkOBD OBD2 Analyzer

Connect your iPhone or iPad to your car's engine to view vital data. Access basic engine values for free, with in-app purchases for advanced diagnostics, smog check readiness, VIN analysis, and error decoding.

Highlights
  • View engine values
  • In-app purchase for advanced data
  • Smog Check Assistant
  • VIN Analyzer
  • Error Decoder and Reset
  • Bluetooth adapter compatibility check
Features
Read full description

ChkOBD let you connect your iPhone and iPad to your Car and view the most important Engine values in a very intuitive user interface in an appealing user-friendly way. ChkOBD connects wirelessly to an ELM237 enabled OBDII - Bluetooth adapter which is readily available from many 3rd party vendors. From this free application that let you have access to the basic “Engine Values”, you will have In-App purchase to access additional information such as : . Advanced Engine Values, an extended choice of sensors available on your car, that you can select and monitor. The available Engine Value from your car, are all listed in a “grey” mode, so, you will have no surprise of what you will get (or not get !) after the In App purchase . Smog Check Assistant, to know if your car will pass the next Smog Check at the state official station, or the App will let you know what needs to be fixed, before driving there, . VIN Analyzer, will let you know what information is in the “government file” from your car, including date and place of manufacturing, . Error Decoder and Reset, to know what is the current error that is in the Memory of the computer of your car and let you have a way to try to reset this error (Normally, it comes back on, if the cause of the error is not mechanically fixed). This is an error scan that is going through about 4'000 possible errors. Usually all these information will be read from all car that have been sold in the USA after 2005. The fact that these applications are offered from inside a free app, in our side, from this free app, we are able to check before any of your purchase, that your car and your Bluetooth adapter will be 100% compatible with these applications. We are using this technology to try to provide to our customers the best possible satisfaction.

About

OBDGO PRO

Unlock hidden vehicle features and perform OBD-II diagnostics with this app. It allows you to activate functionalities like wireless CarPlay, disable start-stop systems, and scan/clear trouble codes. Generate detailed diagnostic reports to understand and repair your car.

Highlights
  • Unlock hidden vehicle features
  • OBD-II code scanning and clearing
  • Generate and share diagnosis reports
  • Activate wireless CarPlay
  • Disable start-stop systems
  • View freeze frame data
  • Interactive data stream graphing
Features
Read full description

OBDGO PRO besides basic OBD-II diagnosis, vehicle hidden features unlock is available. Let everyone enjoy the fun of modding! 1. Unlock Hidden Features Support Models: Porsche, BMW, Mercedes, Ford, Audi, Volkswagen, more available vehicle and year models please check in app. Popular features such as: - Activate Wireless CarPlay - Disable Start Stop - Enable Engine Performance Menu - Change Turn Signal Blicks Times - Change Head Unit Start Animation - Activate G-Force Display More features are waiting for you to explore! 2. OBD-II Diagnosis Vehicle coverage: GM, Ford, Chrysler, Toyota, Nissan, Mazda, Mercedes, Mitsubishi, Hyundai/Kia, BMW/Mini, Honda/Acura, Volkswagen/Audi, Subaru, Buick, Chevrolet, Cadillac, Lincoln, Dodge, Jeep, Smart, Skoda, Porsche, FIAT, Renault, Peugeot, Citroen, Landrover, Jaguar, Lexus, Infiniti, Suzuki, Ssangyong. Features such as: - Scan trouble codes - Clear trouble codes - Generate, print, and share Diagnosis Reports - Mode 6 (On-Board Monitoring Test Results) - Smog Readiness Check - Freeze Frame Data - Multiple data streams interactive graphing and logging - Wireless bluetooth connection with vehicle - Metric and Imperial settings 3. Diagnosis Report Diagnosis report is specific to your vehicle's year, make and model. Providing a cryptic code definition by giving you validated fixes for your trouble codes. Save time by using OBDGO PRO to know your vehicle how to repair in advance. OBDGO PRO is a professional scan tool and the APP is free to install, but it does require the purchase of sensor to communicate with your vehicle. Sensor simply connects to your data port located inside your car near the steering wheel. Every car made since 1996 is global compatible can be used anywhere in the world.

Screenshots

ChkOBD OBD2 Analyzer4 screens
OBDGO PRO4 screens

Verdict

The call

The clearest difference is rating: OBDGO PRO at 4.5 against ChkOBD OBD2 Analyzer's 3.0. OBDGO PRO also leads on in-app purchases (none vs 4) and ratings volume (31 vs 4). 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. ChkOBD OBD2 Analyzer sells 4 in-app purchases, starting at $4.99 per month. OBDGO PRO asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

OBDGO PRO holds the better App Store score, 4.5 against 3.0. That said, the two scores are not equally well evidenced: OBDGO PRO has 31 ratings behind it against 4, so its average is the more settled of the two.

UpkeepUpdate frequency

ChkOBD OBD2 Analyzer ships an update every 3 months, OBDGO PRO every 2 months. The most recent releases landed on October 13, 2026 and October 24, 2026 respectively.

Scorecard5 real differences · 5 level
ChkOBD OBD2 Analyzer versus OBDGO PRO: the parameters behind the verdict, then further details
ParameterChkOBD OBD2 AnalyzerOBDGO PRO
PriceFreeFree
Rating3.0 (4 ratings)4.5 (31 ratings) — better
Positive reviews—69.2% of reviews
Number of ratings431 — better
Update frequencyEvery 3 monthsEvery 2 months — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.011.0 — better
Further details — not scored
Size63 MB137 MB
Age rating4+17+
DeveloperCheck On-Board Diagnostics LLCOBD GO TECH CO LTD

Customer experience

ChkOBD OBD2 Analyzer

All ratings4 ratings
Positive50.0%
Neutral0.0%
Negative50.0%

OBDGO PRO

All ratings25 ratings
Positive88.0%
Neutral4.0%
Negative8.0%
Written reviews13 reviews
Positive69.2%
Neutral0.0%
Negative30.8%

In-app purchases

4 purchases

ChkOBD OBD2 Analyzer

Subscriptions1
  • Smog Check Assistant$4.991 Month
One-time3
  • VIN Analyzer$1.99
  • Error Analyzer$2.99
  • Advance Engine Values$4.99
None

OBDGO PRO

No in-app purchases

Questions

Is ChkOBD OBD2 Analyzer free?
ChkOBD OBD2 Analyzer is free to download, with in-app purchases available.
Is OBDGO PRO free?
OBDGO PRO is free to download, with no in-app purchases.
Which has better reviews, ChkOBD OBD2 Analyzer or OBDGO PRO?
OBDGO PRO is rated higher. ChkOBD OBD2 Analyzer averages 3.0 out of 5 from 4 ratings, while OBDGO PRO averages 4.5 from 31 ratings.
Do ChkOBD OBD2 Analyzer or OBDGO PRO have ads?
Neither ChkOBD OBD2 Analyzer nor OBDGO PRO shows ads.
Which is updated more often, ChkOBD OBD2 Analyzer or OBDGO PRO?
ChkOBD OBD2 Analyzer ships an update every 3 months, and OBDGO PRO every 2 months. Most recently, ChkOBD OBD2 Analyzer was updated on October 13, 2026 and OBDGO PRO on October 24, 2026.

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