CarScannerOBDAutoDoctor will not log if you are not on the sensors screen. If you want to keep the log info, you have to email it to yourself, it won’t save to any cloud service you may have. Also, if you switch to another app then back, CarScannerOBDAutoDoctor restarts and half the time will not connect back to the OBDII adapter. I am using the OBDLink MX+. I was going to buy the desktop version for my MacBook, but won’t be wasting the money since it probably has the same lack of stability as the iOS app. I paid for the year of PRO, but cancelled that so I don’t get charged again. If I had known there were these issues, I would have tried the monthly subscription, but wanted to save money and go for the year. An app that charges a monthly and yearly subscription fee should work much better than this one does.
In response to the developers response, I have another app that works fine in the background with the OBDII adapter. I have other apps that have no problem running in the background either. Also, logging is important to me. I have a phone that has no issue with storage, so having the option to have it log the entire trip and store it to iCloud or another cloud based storage platform shouldn’t be an issue. You could make it an option that could be turned on or off by the end user instead of deciding what we need.