The IRIS F-14 Tomcat was my first payware aircraft that I bought in late 2007.
I think it became freeware around 2010/2011 together with their F-15s and RAF Phantoms when IRIS focussed on FSX.
There was a pro-version of the Tomcat including the F-14B models but for FSX only.
However the repaints are more or less compatible with only some small differences regarding pilot and RIO textures and helmets as far as I remember.
The freeware IRIS models were available on their site for a few years.
I think it became freeware around 2010/2011 together with their F-15s and RAF Phantoms when IRIS focussed on FSX.
There was a pro-version of the Tomcat including the F-14B models but for FSX only.
However the repaints are more or less compatible with only some small differences regarding pilot and RIO textures and helmets as far as I remember.
The freeware IRIS models were available on their site for a few years.