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Advertisers flee to Android as majority of iOS users opt out of ad tracking

Advertisers increase spending on Android as iOS 14.5 blocks tracking

According to data from the Post-IDFA Alliance, only 36.5% of iOS 14.5 users are opting in to ad tracking, which is causing an advertiser exodus to Android.

App Tracking Transparency is a feature introduced in iOS 14.5 that allows users to stop ad tracking across apps and the web. This controversial feature disables one of the widest used tracking identifiers — IDFA.

A coalition of advertisers that call themselves the Post-IDFA Alliance collected their advertising data to compare how the market is shifting. The group includes AdColony, Fyber, Chartboost, InMobi, Vungle, and Singular.

Advertising spend on Android has increased from anywhere between 8.3% to 21% for these firms. This upward trend is accompanied by a universal decrease in spending on iOS advertising, but only by about 3%. Vungle is the only company that increased spend on both platforms, increasing by 21% on Android and 3.3% on iOS.

The group says the spending changes are experimental while observing trends in the industry. Ultimately, it is expected that ad spend will increase across the industry.

In the two weeks following iOS 14.5's release, the Post-IDFA Alliance says adoption ranged from 11.5% to 14.92% and called it a "low adoption rate relative to past iOS updates." The group's data on adoption rate does not appear to be correct — the adoption rate is normal for a point release, incrementing a version by 0.1 update versus and may be slightly faster than the adoption rate from iOS 14.1 to iOS 14.2.

Of those updated to iOS 14.5, around 36.5% of users have opted into data collection, according to AdColony's data. One member of the Alliance, Singular, says only 16.8% of users opted in. About 18.9% of users toggled off "Allow Apps to Request to Track" from Settings entirely.

The rate of opt-in differs between each member, but between the high of 36.5% and the low of 16.8%, neither figure represents a worst-case scenario for the industry.

Ad impression costs are down as well. The industry expected a drop when iOS 14.5 released, but it may be temporary. Alliance partners predict that impression cost will steadily increase as marketers feel more confident with ad performance despite App Tracking Transparency.

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27 Comments

chadbag 13 Years · 2029 comments

Have to see how this plays out, but my initial reaction is "good deal".   Hopefully it leads to fewer ads.  I don't rely on "free" ad supported services myself so personally like the idea of the demise of ads as an end result. 

I use these kinds of services but don't rely on them and can adjust 

heli0s 10 Years · 65 comments

Why do you continue to describe as a "controversial feature" something that should have been there since day one, which is asking people consent with how their data is used?

Flytrap 7 Years · 61 comments

According to data from the Post-IDFA Alliance, only 36.5% of iOS 14.5 users are opting in to ad tracking, which is causing an advertiser exodus to Android.
Good Riddance!

lkrupp 19 Years · 10521 comments

Flytrap said:
According to data from the Post-IDFA Alliance, only 36.5% of iOS 14.5 users are opting in to ad tracking, which is causing an advertiser exodus to Android.
Good Riddance!

Until it starts to hurt the bottom line. Conversely it may also cause a privacy conscious user exodus from Android to iOS.  That would be good.