I'm C++ all the way and don't wish to touch swift at all There is something called MetalCPP that you could try. There is a WWDC video about it. I've not tried it myself.

The problem is that a "UIRequiredDeviceCapabilities" (array) key is missing with the values "gps" and "location-services" in the Info.plist file Don’t set “gps” unless you really need 1m accuracy; it will prevent your app from working on wifi-only iPads. I think the non-gps locations on those devices should be good enough for e.g. a dating app - unless it’s a dating app for mountaineers! Also I’m. ot convinced that this is the solution to rejections. I agree with pianosmooth above, just do what they say however ridiculous. In cases like the original post, I’d show a default location with a prominent message saying “location services disabled, tap here to go to settings”. Don’t use (0,0) as your default location, that’s confusing; I suggest something like Alcatraz Island. Don’t choose Cupertino, they will think you have somehow bypassed the restriction!

Do you get warnings when compiling?

This is an institutionalised bug; I filed FB5446792 in 2017.....

That may not be possible if the higher version number is already on the app store.

It sounds like you understand the issues involved with using the accelerometer. In some cases, "sensor fusion" can be used to combine inputs from multiple sensors to get useful results; search for "Kalman Filter". I think this was first used for the Apollo navigation computer. It might be possible to combine barometric pressure data with accelerometer data to measure things in the way you want. Have you looked at the barometric pressure data? Does Core Motion already do any of this for you?

Generally those identifiers are not available to apps. There may be exceptions for e.g. cellular networks' own apps.

The SF Symbols app says it is available (in monochrome) since SF Symbols version 1.0, which means macOS 11.0. Do you have the SF Symbols app?

You aren’t the first to post here about this API being over-complicated and poorly documented - though most have been asking about IAP pricing, rather than apps. (See the “App Store Connect API” forum tag for more posts.) Personally, I’m hoping that there will be an easy-to-use utility on Github before I need to deal with this myself!

Are you sure you want to support 10.10? It would be much easier to support only macOS 11 and newer. Exporting the SF Symbols images and including those in your bundle is technically possible, but legally dubious.

Do you get warnings when compiling?

You have the financial reports, which you can download manually from App Store Connect; you can also download them automatically using the Reporter java utility.

There isn't enough input data. It's waiting for more input.

No, you don’t need them.

No.