Not for use by idiots
This app is perfect!! If you are any kind of mechanic, you know a Tapley meter costs about $1800. I compared this app against out Tapley meter on an actual road test in Cincinnati, and the outcome was within 2% on three different brake tests. This app isn't designed for tree hugging VW drivers who take there car to a shop and pay 5 times what the repair should cost, this app is designed for the mechanically inclined.
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BAD
this now costs money
it was free
it doesnt even deserve 1 star