I also don't understand why a parking meter needs an app, it should have a QR code>web>stripe payment (or a text to pay), rather than 2 buggy apps on iPhone and Android, which require data to download
https://www.schneier.com/blog/archives/2022/01/fake-qr-codes...
You can extend your parking time, find closest parking meters, download tax invoices for businesses etc.
All of these are much faster to do on a native app than a clunky mobile web site.