
Hi @Anonymous,
I have PowerApps installed on my iPhone iOS12.1.4, and notifications enabled. It is true that the location setting under Settings > Privacy > Location Services, does not even have PowerApps app listed. And allow notification setting is the only popup when first time install and open PowerApps.
I have never recieved such notification before.
After some research, I found that this notification is not unique for PowerApps, it seems that other apps on iOS can also have such strange notification. For example, in below link, it shows for Facebook app:
https://discussions.apple.com/thread/7668029
So this is done by iOS not PowerApps. Refer to the answer there:
The issue is the new Today Screen and the Widgets. You need to turn off 'Siri App Suggestions'
1. Swipe to the right to goto the Today Screen
2. Scroll to the bottom
3. Press Edit
4. Find 'Siri App Suggestions'
5. Click the delete button
6. Click Done
Hope this could help.
Regards,
Mona