Second iDevice as Keyboard w/encryption
Launch companion app (“Termius Keyboard”) and pair to primary app (“Termius”) running on another iOS device via BLE (or just IP over WebRTC if you don’t want to deal with BLE). This will hide virtual keyboard on the primary app while you type on the companion app. Use encryption if you don’t go with BLE. Ok to charge for the companion app, but please not another subscription.