Make a subscription to receive Push Notification when prices reach the line you set , you don't have to keep app running to receive notification.
You may set price alerts for Dow/Nasdaq/S&P 500/NYSE Comp/Amex Comp/Russell 1000/Russell 2000/CBOE Volatility/10 Yr T-Note/30 Yr Bond/Nasdaq 100/DJ Trans Avg/S&P 400 Midcap/Amex Major Market ,you will receive push notification and/or email when prices reach the line you set.
You may keep track on the price change every 1 minute.
Note1:Quotes delayed 15 mins.
Note2:You need internet accessibility to receive push notification , also send email when setting alerts in case of notification can't reach you.
Note3:All information provided "as is" for informational purposes only, not intended for trading purposes or advice. This app is not liable for any informational errors, incompleteness, or delays, or for any actions taken in reliance on information contained herein.

Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/