I've had success buying a Pi 4 recently using rpilocator's twitter. Installled twitter expressly for this purpose. They have RSS feeds too, I believe capped at

I've had success buying a Pi 4 recently using rpilocator's twitter. Installled twitter expressly for this purpose. They have RSS feeds too, I believe capped at a refresh per minute. But I don't think background tasks on iOS are allowed to refresh that quickly.