SMOG check
Your country (or your state) is asking you to present your car for a pollution check and you would like to know, before presenting your car, ..if our car makes clean emissions or if would fail on the official check. Note that if it would fail, you probably would be happy to know why and understand which part is misfunctioning (..and be able to get an estimate of the cost of repair before presenting your car to the pollution check).
As in general these checks are not free. The goal of this service is to let you do the measurements and get a report of the anti-pollution system of your car to know in advance it will “pass or fail” the official check. This enables to present a car fully prepared for a successful “pass” result.
(“Like it is often said : The Preparation is 80% of the Success” !)
This service is subject to a monthly subscription fee. (One subscription is functional for an unlimited number of cars, and can be cancelled after a period of one month.
Additional information about Smog Check
This service is normally available for Vehicles 2005 and Newer.
Note that you will not be possible to get this service if your car do not support it.
Identify the Most Common Reasons for a Smog Test Failure
Have the Errors Fixed By Your Mechanic Without Adding Unnecessary Repairs
Delete Error Codes That Prevent Passing a Smog Test
The ChkOBD Smog Check application can tell you in advance if your car will pass or fail a smog check. In case of a failure the app can identify the cause of the failure and let you know what repairs are needed before going to the Official Smog Check.
Important point : The ChkOBD application is NOT an Official Check, it is only designed to provide information before committing to an Official Smog Check.
The app is conveniently available for download at the Apple App Store (iPhones and iPads versions) and as well on the Google Play Store for the Android versions. Once you’ve downloaded the app, you can make sure this service will work with your vehicle before paying any money. The in-app subscription fee is charged only after the app had verified that it will work with your vehicle and you wish to order it.
The subscription is valid for one month minimum and with no limit to the number of cars to be tested with this “In App Purchase”.
Some important things to keep on mind :
The engine needs to be warmed-up to have the catalytic converters in working mode to pass a smog test
If you click on “Error Code Reset”, the reset will cause the requirement of a new “Driving Cycle”, usually driving a number of miles in varying conditions (see more info).

Important comment :
Before letting you subscribing for the use of this app, we are running a complete test in “silent and invisible mode”, in order to verify that your car is fully supporting this important test.
We are doing this internal “PreCheck” in order to try to provide to you the best possible “product quality insurance” : This product will work for your car. Note that your subscription is valid for a non limited amount of cars !
With a compatible OBD Il Bluetooth connector and ChkOBD you can view over a dozen vehicle conditions in a single screen and to know if the car’s OK and safe to drive.