The iOS app, unlike on Android, doesn't remember apps

Hello @"marcoc"! 👋

On the iPhone AutoFill is specifically handled by iOS through an Apple technology named iOS Password AutoFill and 1Password only provides the data for the experience. Password AutoFill will match the apps that you use to your login items in 1Password by taking the associated domain associated with an app and comparing it against the website URL in your login items. If there is a match then Password AutoFill will offer to fill your login information.

If your login item is not being suggested for a particular app then you'll need to add the app's associated domain to your login item in 1Password. When you tap on the username or password field in an app you'll see the Password AutoFill prompt appear (above your keyboard), tap on the prompt and you'll see a button named "Create Login" with a website address underneath it. Take note of that website address and then use the following steps to add that address to the login item that you would like to have suggested for that app:

1. Open and unlock 1Password.
2. Find the login item that you would like to associate with the app and tap Edit.
3. Scroll down and tap on Add URL.
4. Add the app's associated domain.
5. Tap Done.

If you don't see a website address underneath the "Create Login** button then it means that the developer of that app hasn't added an associated domain and there is nothing for Password AutoFill to use to match the app to a Login item in 1Password which means that you'll need to search for the correct Login item. You can also contact the developer of an app to have them add a specific URL as an associated domain for their app so that you don't need to manually add another URL to your login items. Here is Apple's developer page regarding associated domains:

Supporting Associated Domains | Apple Developer Documentation

I hope that helps. 😊