The simple Android OPC UA client. You can connect to the OPC UA servers, browse Address Space, read nodes, add items to subscription.
You can get the installer of TeslaClient 1.11.2 for free and check out users' reviews on Droid Informer. The app requires Android 2.2 and above. This application is totally secure for downloading. TeslaSCADA is the creator of the tool which relates to the Business category.
The latest update of TeslaClient was released on Feb 27, 2015 and the app was downloaded by over 1K users. On Google Play, this application was rated 4.4 by its users.