It would be great if SenselApp ran on iOS.
If Sensel Morph could be programmed via BLE then SenselApp could be web-based using Web BLE. (Unfortunately, the standard iOS browsers don’t do Web BLE yet, but the free WebBLE app can.) Check out, for example, Espruino’s Web IDE:
I’m spoiled by being able to program so many devices without leaving my iPad.