I think its safe to leave the charts for the weekend and just have a price alarm set. Enjoy your bank holidays (if your in the UK)!
How can we do that please ? ( for free as possible )
Best Android app right now (imo) is
Bitcoin Checker.Another good one:
Bitcoinium.
And here's an alert that works through a webpage:
Bitalarm.comPlease consider donating a few Dollar if you keep using them. I understand you asked for free services, and the above are free to use, but without community support, they won't be updated and supported. It's up to us to keep the developers happy.