Yes and no. Because keyboard apps "see" your typing, and iOS devices can communicate over the internet, this is theoretically possible. But iOS implements a safety mechanism specifically for custom keyboards. Unless you explicitly grant "Allow Full Access" in Settings to Typefinity, iOS prevents it from using the network at all. In particular:
- It cannot access the network.
- It cannot access the clipboard (cut/copied text).
- It cannot access the selected text.
Our goal is to provide the best possible typing experience available on your device, and nothing else. We charge money for our keyboard and our customers are customers, not our product. But you don't need to trust us -- just leave "Full Access" off if you are concerned, and iOS prevents any communication if attempted.
For further information, please refer to Apple's documentation on the matter: