Apple plans to launch iAds in Europe and will announce the first brands to use the service later this week, according to a Financial Times report.
The report indicates that despite enormous potential for the iAds service, enthusiasm has waned amid high prices for ads, a slow production process and client withdrawals.
Apple has twice delayed iAds European launch in recent weeks, and in some cases been prepared to discuss running campaigns for less than its $1m minimum spend in order to attract good names as advertisers.
"They are expensive and a pain to deal with," said one media agencys digital chief.
"Apple is in a weaker position than youd think," said another agencys digital leader.
"Apple is still figuring out how to sell advertising," said one senior marketing group executive. "You dont just become a sell-side media company overnight. The infrastructure is missing at Apple right now."