Version 3 (1.2) updates: Small bug fixed and this version will not support devices are below android version 3.0 (Level 11). Version 2 (1.1) updates: Many thanks to you all for the feedback and now you can zoom in/out the schematic, simply click on the image and open a new page to pinch to zoom. Large collection of electronic circuits. Simple and interesting that you can build on your own. Daily update to the database on the app so you will always find something new. Apps will be updated soon we are working hard to make it better. Also visit us online athttp://diy.slmelectronic.co.uk/