Tom,
I am successfully using the KNFB app. with an iPhone 5s.  First 64 
bit procesor as I understand it and performance is very 
acceptable.  Great app.  Right out of the box I was successful, 
without reading the manual, as we hams don't usually do!!
Pat, K9JAUAt 07:53 AM 3/25/2015, you wrote:
>Good morning Tom although my experience with Kay and FB reader app and iPhon=
>es is very limited, I will tell you that I saw the app being use with an iPh=
>one 5 and found it to be extremely sluggish. If you're going to use the app y=
>ou are much better off to get an iPhone six or 6+ to use it with. Fred Olver=
>
>
>Sent from my iPhone
>
> > On Mar 25, 2015, at 1:44 AM, Tom Brennan <[log in to unmask]> wro=
>te:
> >=20
> > I know this has been discussed before in the group but I'm on a new comput=
>er and
> > have no back emails.  Also had shoulder surgery day before last 
> Christmas w=
>hich
> > has not gone too well and I still have trouble using my right hand so I
> > apologize for my typing.  I'm also now using a Mac which I have no idea wh=
>at I'm
> > doing with so sorry for errors.
> >=20
> > What I'm needing to know is about differences between the i-phones 5, 6, a=
>nd 6+
> > when using the knfb reader.  I'm specifically wanting to know which is bes=
>t for
> > the application since that's largely why I'm considering an i-phone..
> >=20
> > Any help will be appreciated with this as I'll also be a new 
> i-phone user w=
>ith
> > one hand for awhile <g>.
> >=20
> > tom
> >=20
> >=20
> > Tom Brennan  KD5VIJ, CCC-A/SLP
> > web page http://titan.sfasu.edu/~g_brennantg/sonicpage.html