SkyView and FA Maps

Thank you for info, I know my SkyView would be real time and wouldn’t have queried it if it was obviously delayed all round but what I was querying was sometimes a FA map showed a specific aircraft virtually the same as my Skyview and on occasions a close by commercial aircraft was not shown at all on the FA map.

Not an issue except I occasionally view a local airport in US and was curious how accurate it was.

Geffers.