Phone bike fit apps

Has anyone tried any of the bike fit apps you can download for your phone these days. Thinking specifically of either Roadie Bike Fit for android or Bike Fast Fit for the iphone (bah!)
Whilst I'm comfortable with my current riding position, I'm still interested to see if I'm 'off' in any areas but don't want to spring for the full professional job just yet. I may buy a new bike later in the year and would rather have that fitted if I do go down that route.
I appreciate that an app is never going to be as good as a professional bike fit but has anyone tried both (pro and app) to see how close it does come
Whilst I'm comfortable with my current riding position, I'm still interested to see if I'm 'off' in any areas but don't want to spring for the full professional job just yet. I may buy a new bike later in the year and would rather have that fitted if I do go down that route.
I appreciate that an app is never going to be as good as a professional bike fit but has anyone tried both (pro and app) to see how close it does come
Cannondale Synapse 105
Giant FCR3
GT Avalanche 3.0
Canyon Nerve AM 6.0
Giant FCR3
GT Avalanche 3.0
Canyon Nerve AM 6.0
0
Posts
http://www.dcrainmaker.com/2013/10/automated-measurement-review.html
Never used it but might be a good starting point.
As said above worth a punt for the few quid it costs if you don't want to pay for a full bike fit.