[dangerface]

> How do you know your ads aren’t just taking credit for customers who were going to buy anyway?

If you are doing advertising right you build a funnel from awareness through to conversion and track every part of it so you then a/b test your adverts and channels.

Getting advert channel fit is the key to success and can only be done by testing and measuring your adverts. The fact that op couldn't measure the effectiveness of their adverts shows they weren't doing this and their bad outcome should be 100% expected.

If you are just buying adverts in the hope you get more conversions then you are putting those adverts out to die. Burn your money you will probably get more eyes for doing that than untested adverts.

[whimsicalism]

This is now impossible to do on iOS devices.

[dangerface]

How is it impossible on iOS?

[whimsicalism]

Click attribution is basically not possible due to new Apple policy on tracking, unless you opt-in.