App-ads.txt is an extension of ads.txt, suitable for advertising in the in-app environment on mobile world. "Ads.txt" stands for authorized digital sellers and is a simple, flexible and secure method that publishers and authorized partners can use to publicly declare that they have approved the company to sell their digital advertising resources.
App-ads.txt helps protect app publisher inventory and ensures advertiser spend reaches the intended audience. Most of the mobile ad networks like AdMob fully support this standard to help you better protect your revenue and brand.
google.com, pub-1234, DIRECT, 234234fd232f24
pubmatic.com, 1234, RESELLER, 123456fds3441
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Ads.txt is a text file publishers add to their websites, which lists the ad sources authorized to sell their inventory.
In advertising ecosystem, ads.txt serves as a method of improving transparency for demand side platforms. In fact, DSPs aren’t buying web supply that isn’t authorized via ads.txt.
Ads.cert goes a step further than ads.txt and validates the information that passes between buyer and seller at each stage of the digital ad supply chain, ensuring it’s not vulnerable to being modified or gamed. It’s like a digital signature that lets buyers verify a specific site’s inventory, and it stops fraudsters from tampering with the inventory.
Most of the popular ad networks and SSPs support app-ads.txt. Google Admob, Facebook, Pubmatic, Rubiconproject, Appnexus, Adcolony, Unity Ads ...
Hardest and expensive way(12 hours, over $100 yearly cost);
Easiest way (3 minutes, $12 yearly cost);
After updating app-ads.txt file, validation on Google Admob can take 24 hours.
In conclusion, if you are an application publisher and monetizing your apps with ads, you should support app-ads.txt to prevent decreasing your income.
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