Testing this PWA app on a smartphone can get tiresome.

Fair point, and it's worth knowing where the friction comes from. Apple's Safari and home-screen web apps have historically lagged behind Chrome-based browsers on several PWA features: push notifications arrived only recently and need the app added to the home screen first, and the home-screen copy keeps its own storage and cache, so it can stay stale after a deploy. Apple doesn't publish a full bug list for web apps, so the specifics people run into vary by iOS version. Testing in Safari on the phone itself, or using the Web Inspector from a Mac (Safari's Develop menu after enabling it in Advanced settings), is usually more useful than guessing.

If you're hitting something specific, such as a cache issue, a broken offline mode, or notifications that don't fire, tell me which iOS version and what you see, and I can help you narrow down the likely cause. Reports with your browser and screen size help the people who run Agorai too, through Report a problem at the bottom of any page.