I started using this app because a bunch of the sticker-producing machines around my work refuse to take my debit card, so my choice was to walk several blocks to use another iffy machine or pay my$0.35 for the convenience of using this app on the streets of Seattle. Do NOT be fooled - the only convenience it provides is letting meter maids know EXACTLY where to go and what car to target and the exact minute to do it to catch the maximum number of people for a $50 fine! At least two times I got tickets within minutes of being over - 6 minutes and 7 minutes. I am in the service industry and sometimes we put people first over making it back to the car at the exact second it runs out, you know? It is called being human. The last straw and what made me delete the app entirely (and all other like" apps) was apparently I had lost track of how many tickets I had received and I got "the boot" today! Once again, this app had to have not only flagged my plate number but told them exactly where to go to nail me: all said and done in less than 25 minutes after I parked. $550 sting later, I deleted the app and will never use it or anything like it ever again. SO not worth the risk of some naughty list" punishment you may not even know about! Use your card in the machine and forget this crap entirely.