Google AdMob is the best choice in my opinion for any developer or company looking for a reliable way to monetize their app traffic and generate revenue from relevant ads displayed inside their mobile app, and it can be easily integrated into any IOS or Android App.
It's fantastic for targeting an audience when you know where they will be for a very low CPM. However, it's hard if you are a brick-and-mortar and want to truly measure the results. You need to get creative in ways to attribute site visits and purchases back to the campaign (unique coupon codes, etc.)
No special reason for choosing Google AdMob. Out point is easy to gain appropriate knowledge from youtube.com and people who work with us. We won't have another similar application so far. However, we feel it works well and makes us happy because of easy function and experience. So I recommend this if we need to apply this for our company activity.
Before I got into it my other friends told me there are way better Ad providers. But being a Google fan I still signed up.
Now I remember writing to AdMob, requesting them to give me earning rates... But they never replied. So zero return on investment. They just keep you guessing.