App Inventor indeed looks interesting, but we haven't tried it yet to see whether is supports building real life applications with more complex logic (e.g. enterprise applications). It will probably be a good idea to publish a video showing how one would develop the App Inventor example using Tersus.
Back to your first comment, we realize our set of tutorials is not complete yet. If you have difficulties using Tersus, we'll gladly answer any question through this user forum.