How? On iPhone I only give it location permissions while I'm using the app, and I pay with Apple Pay to avoid giving them much that they would be able to correlate elsewhere.

An app that needs to know your location even though you're going to the store to pick up the order?

I believe they use the proximity to choose the closest store and to start the order when you get there but are still waiting in the drive-thru line to give them your name/code.

I haven't tried to disable it completely, but even if I can't I dont find that limited location tracking for when I'm actually ordering food and driving there to be an issue.

The only thing required for that is a zip code. In any case, once you choose a location, it can simply save that preference instead of tapping your lat/long coordinates every single time. Just more data to sell to a broker down the line.

Is the app giving away any more data than what was being given away by using a credit card?

Duckduckgo app to stop much of the invasion on Android

Exactly. Currently the iOS App Store has the McDonalds app as having...

Data Used to Track You : Contact Info & Identifiers

Data Linked to You : Purchases, Financial Info, Location, Contact Info, Search History, Browsing History, Identifiers, Usage Data and Diagnostic

> Data Used to Track You : Contact Info & Identifiers

That's email address and a device ID.

> Data Linked to You : Purchases, Financial Info, Location, Contact Info, Search History, Browsing History, Identifiers, Usage Data and Diagnostic

That's purchases made from the app, and info about how you paid for them. The search and browsing history are the search and browsing history from web views within the app. The usage data and diagnostics data are usage and diagnostics for that app.

Putting it all together, what they get are the email you gave them when you made the account, a device ID, location, and they can see whatever you actually do in the app.