you can create your own formula with this app, and then input variables, you will get calculation result.

This is a tool upload your WhatsApp backup to your Dropbox account!
It features automatic upload at 4:15 am and 1 pm, a free to choose interval between the auto-uploads and more.

Want to know what you have to pay for your mortgage? This app can help you!
-Various mortgage types are supported: amortization, interest only and linear mortgages.
-An annual oversight with average monthly payments per year is shown.

Unzip your screen in style!!!
**10+ themes plus custom theme builder***

GedFamilies enables a GEDCOM file to be easily transferred from a Windows PC to your Android phone or tablet, enabling it to be viewed and edited wherever you are.

Just write, keep it simple!

Screen On allows you to keep the screen On/Off with simple Shake.

Lightest and most useful FREE Android optimizer App.

If you want to change ringer mode in one touch, this widget is just for you.

Do you need a quick-reference tool for finding and inserting symbols into your texts? This useful Symbols app offers more than 600 symbols you may use in your your daily communication: currency symbols, Greek letters, arrows, line, math, units, Japanese characters, emoticons/smileys, etc.

When you plug your EarPhone or Bluetooth in, it will automatically run selected app(s).Like a power amp. That's it. So simple

This simple app calculates the capacitance required to correct a given power factor in a 3 phase electrical circuit to unity (1) or to a point below unity.Thus improving the efficiency of that electrical circuit.It also includes a calculator to calculate true power, apparent power or power factor

Perfect solution to extend battery life

Kai Says - Mobile Edition - your personal assistant in the cloud.
Kai Says is a voice that keeps you on track, on schedule, and ready for the next challenge of your day.

ROOT Power FREE is a powerful tool for any user with Rooted android devices.

ROOT Power File Manager is a powerful tool for any user with Rooted android devices.

Sick of charging your phone every night? Exclusive Battery Saver is a FREE battery saving app designed to make your Android last longer!

Vektoria is a mobile image viewer and converter displaying Scalable Vector Graphics files. Application works with both SVG and SVGZ files, converts SVG into PNG graphics, extracts SVG metadata and transforms images into data URLs.

Apart from basic calculations offered by most analogues this application can:
-draw charts of any complexity;
-solve complex fractional expressions.
It contains full algebraic and geometric formulae list.

This application provides the best features to saves the battery.