>> it looks like it depends on proprietary standards, meaning it needs its own apps and hooks.<< I don't know what the situation is on Android, but on iOS they

>> it looks like it depends on proprietary standards, meaning it needs its own apps and hooks.<< I don't know what the situation is on Android, but on iOS they're connecting to the Apple Notification Center Service that was introduced in iOS 7. So I think Chronos will be able to respond to any app that generates iOS notifications.