It is Ozilibrary. Including all the english books inside.
Compact design only for Android devices.
Ozitech will produce further versions of Ozilibrary with addition of new books time by time.
Keep tuned.

With "Calculate Capacitor" you simply enter the Capacitor Code, and "Calculate Capacitor" will give you the values in PicoFarad, NanoFarad, MicroFarad for you!

Now with "Calculate Capacitor PRO", you can enter values in Micro, Pico and Nano Farad, and the app will give you the Capacitor Code.