Kirk McElhearn, writing for Macworld, is frusterated he can't choose his default apps in iOS.
But iOS offers no such option. If you tap a URL, it opens in Safari. If you tap a link to send an email, it opens in Mail. The default calendar is Apple’s Calendar app. And so on. You may not want to work that way and because Apple doesn’t give you any choice, you’re stuck with workarounds: using share sheets to open a web page in a different browser; copying an email link or address to create an email; and so on.
The simplicity of iOS is inviting to new users, but it is hurting the growth of the platform.
These kind of design decisions keep me from considering iOS to be more than a appliance.