Problem is you pay with data anyway now:

Microsoft and Google show you ads regardless of if you pay or not.

Seriously even my alarm clock app that I pay a monthly fee for tried to ask nicely if it was ok that they tracked me across web sites after Apple started enforcing their new rules.

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And: If anyone has a good alarm clock app for iPhone that makes sure I'm out of bed before it turns off, and that is a one time payment or a reasonable fee or even open source I'm all ears.

You're doing that either way, just like you're going to see ads regardless of whether you paid $$$ for a Windows license, pirated a key or just life with the water-mark and other limits of an unlicensed Windows.