blocking downloading to iPod when downloading to iPad

When I have downloaded some apps to the iPad I find that the same apps have
been downloaded to the iPod touch. Is there anyway I can block apps from
downloading the iPod as most of the apps I want on the iPad only.

If I delete the app on my iPod touch is this likely to delete the app on my
iTunes list of apps?

 

If the apps are being downloaded automatically by the iPod Touch itself,
then you can turn that off on the iPod Touch in Settings > Store >
Automatic Downloads. (There are separate settings for Music, Apps and
Books.)

If the apps are being copied onto the iPod Touch by iTunes, then you can
turn that off in iTunes. Connect your iPod Touch, then select it in the
left column of iTunes. Click on the Apps tab, then at the bottom of the
list of apps, uncheck the "Automatically sync new apps" option.

No. iTunes will keep your purchased apps indefinitely, until you delete
them in iTunes (from the Apps category in the left column).

Deleting an app on the iPod Touch which will delete any data or
documents on the iPod Touch that were under control of that app.
(Nothing will happen to the same app on the iPad, or any documents or
data managed by that copy of the app.)

 

Deleting an app from a device leaves it on iTunes - if you go to the
device on the Apps tab you will see it listed, but unchecked.

It is consistent with the way you can have different music or movies
or photos on different devices.

--
"In no part of the constitution is more wisdom to be found,
than in the clause which confides the question of war or peace
to the legislature, and not to the executive department."

- James Madison

 

Thanks Howard and David.
It's useful to know these things.