I bought the app knowing about the complaints of others about the safety credits. I don’t know if the need to periodically purchase the credits was made clear on this site before those complaining purchased the app. I have not been able to obtain sufficient info about these credits despite having send an email to the apps developer, etc. But, note that I did not send the email long ago.
Upon first use of the app I was told, in effect, that I had been “gifted” an undisclosed amount of safety credits. Using the app, I have been unable to determine the number of credits I received, and I have been unable to determine anything like, for example, the number of credits used during this morning’s app test. While expected, I am disappointed about the way the developer, etc., has chosen to provide information about safety credits. Indeed, I cannot even figure out what causes a credit to be used. For example, does use occur when a speed limit is updated, after so many minutes of use, or when an over-limit (or limit plus buffer) alarm is sounded?
I think, given my purpose, the app performed well, though not perfectly. Perfection is too much to ask given the difficult job it is trying to do for me. My need/want is for the app to keep me continuously updated on posted speed limits and to tell me immediately when I have exceeded such a speed limit or such a limit plus a buffer, or grace, amount.
I tested the app for about an hour this morning on roads where the speed limits change frequently (and where some have changed in the last month or so). It did a good job of identifying the speed limit changes. It occasionally missed a change was a bit slow to pick up a change, including missing a change in a construction zone (which I did not expect it to pick up). But, overall, I was satisfied with its ability to identify changing speed limits.
The app also did a pretty decent job of telling me when I exceeded my speed limit plus buffer. I set the app so that it would give me an “over” alert if I went speed limit plus 5 mph (e.g., 50 mph + 5 mpg, or 55 mpg, if the posted speed limit was 50 mph). Call an over alert “dee dah.” In this regard, the app sometimes gave more than one dee dah alert—which I did not want, but no big deal. I found that the app also gives a “safety” alert when the driver slows to the speed limit (or possibly just below the speed limit)—a “dah dee” alert. Apparently, this feature cannot be turned off. I did not want it, but, again, no big deal. My only somewhat significant issue with the dee dah (over) alerts is that they are a bit too delayed for my ultimate comfort.