Quote from AAAintheBeltway:
I used it for years and loved it. As others have noted, the interface is great, very intuitive, the charts are great, all the indicators and tools you need and not 700 additional ones that you don't need just to say they have them. For me, I loved just being able to turn it on every morning and knowing it would work and not require any fiddling around, etc.
I switched to Ninja because I got tired of paying the exchange fees for several different futures exchanges. Ninja is a great platform as well and it's hard to beat free, but using a broker data feed is never going to hassle-free . Ninja is not nearly as intuitive or easy to use as QCharts either. Things like drawing S and R lines require multiple clicks, etc, while on QCharts you just click and go.