On some of our apps we had a 13 second refresh - then changed it to 17
(about 30% longer). Our CTR did not change, so we saw a 30% drop in
revenue. That demonstrates with some apps fresh ad content is more
critical, and with others ad exposure time is more important. In this
example, if our users see fresh ads, they click. So, fewer ads simply
meant fewer clicks.
This is an important measure of app design and effectiveness along
with pertinent ad selection. If ads refresh too quickly, users do not
have time to view the ad. However, without fresh content, after an
uninteresting ad is viewed, it is pointless to continue to have it
displayed.
This emphasizes the need for filters and testing various refresh
rates. AdMob has a great policy by stating they "maximize eCPM." If
you can reduce your requests and increase your eCPM (by improved CTR),
then you should. It will minimize errors, improve user experience and
maximize revenue - all at the same time.
I would be nice if AdMob could chime in to say whether they have a CTR
goal (maybe by category?) or do not have one (maybe they might in the
future?). Maybe they feel they can't have one because it is more "art
than science." Any guidance here?
Thanks,
Jim