Can you spot and remember a picture? Are you always struggling to remember where your stuff is? Try Dr Matrix.
If you have a problem to remember number, color or shape, try Dr Number, Dr Color, or Dr Shape.

Global Tip Calculator provides a simple and fastest way to calculate a gratuity, and split the bill among a group of people.

Spot it and tap it!
Dr Vision is a vision training game. It trains and tests your visual ability to quickly and accurately locate a series of stationary characters. The game is simple, and your visual skills can be developed and enhanced through the training.

This is the hardest training application in the Dr series. If you have a poor short term memory, try Dr Number or Dr Color to improve it first.
Dr Shape is designed to train your memory and concentration for shapes. It is especially helpful in improving the short-term memory.

***** New currency Exchange engine provides quick and smooth performance *****
***** International Currency Converter now supports four major commodities (Copper, Gold, Palladium, Platinum and Silver) *****
International currency converter provides up-to-date exchange rates information for over 140 different currencies, and 5 major commodities. There is a built-in calculator in the application. You can perform basic arithmetic [...]