Comparison

Mobilscan OBD vs ChkOBD OBD2 Analyzer

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

Head to head
About

Mobilscan OBD

This app connects to your vehicle's OBD system via a WiFi adapter to display sensor data and diagnostic trouble codes. It includes a simulator for testing functionality without a physical connection.

Highlights
  • Retrieves sensor values
  • Displays fault codes
  • OBD WiFi adapter communication
  • Built-in vehicle simulator
  • Supports OBD-compliant vehicles
Features
Read full description

Mobilscan OBD retrieves and displays sensor values and fault codes from an OBD-compliant vehicle. Mobilscan OBD communicates with the vehicle through an OBD WiFi adapter, which must be purchased separately. A demonstration of the functionality of Mobilscan OBD is possible through the built-in vehicle simulator. A suitable OBD WiFi adapter is available from http://www.mobilscan.dk and selected retailers.

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.

Screenshots

Mobilscan OBD3 screens
ChkOBD OBD2 Analyzer4 screens

Verdict

The call

The clearest difference is rating: ChkOBD OBD2 Analyzer at 3.0 against Mobilscan OBD's 1.5. Mobilscan OBD's advantage is in-app purchases (none vs 4) and iOS requirement (10.0 vs 13.0). On price, ratings volume, update cadence and ads 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. Mobilscan OBD asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

ChkOBD OBD2 Analyzer holds the better App Store score, 3.0 against 1.5. Both are backed by a comparable volume of ratings — 2 and 4 respectively.

UpkeepUpdate frequency

Mobilscan OBD ships an update every 2 months, ChkOBD OBD2 Analyzer every 3 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

Scorecard4 real differences · 6 level
Mobilscan OBD versus ChkOBD OBD2 Analyzer: the parameters behind the verdict, then further details
ParameterMobilscan OBDChkOBD OBD2 Analyzer
PriceFreeFree
Rating1.5 (2 ratings)3.0 (4 ratings) — better
Positive reviews0.0% of reviews—
Number of ratings24 — better
Update frequencyEvery 2 months — betterEvery 3 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS10.0 — better13.0
Further details — not scored
Size7 MB63 MB
Age rating4+4+
DeveloperMobilscanCheck On-Board Diagnostics LLC

Customer experience

Mobilscan OBD

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

ChkOBD OBD2 Analyzer

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

In-app purchases

None

Mobilscan OBD

No 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

Questions

Is Mobilscan OBD free?
Mobilscan OBD is free to download, with no in-app purchases.
Is ChkOBD OBD2 Analyzer free?
ChkOBD OBD2 Analyzer is free to download, with in-app purchases available.
Which has better reviews, Mobilscan OBD or ChkOBD OBD2 Analyzer?
ChkOBD OBD2 Analyzer is rated higher. Mobilscan OBD averages 1.5 out of 5 from 2 ratings, while ChkOBD OBD2 Analyzer averages 3.0 from 4 ratings.
Do Mobilscan OBD or ChkOBD OBD2 Analyzer have ads?
Neither Mobilscan OBD nor ChkOBD OBD2 Analyzer shows ads.
Which is updated more often, Mobilscan OBD or ChkOBD OBD2 Analyzer?
Mobilscan OBD ships an update every 2 months, and ChkOBD OBD2 Analyzer every 3 months. Most recently, Mobilscan OBD was updated on November 6, 2026 and ChkOBD OBD2 Analyzer on November 3, 2026.

Other comparisons