Jade Jewel description

Download the app and find information about jewelry.
In addition to useful and interesting information, you can check your capabilities.
The app has two games:
1. In the first, you need to memorize the initial number, and carry out calculations in your mind, after which you will need to write down the resulting number.
2. The screen will display 1 letter and 1 number. You will have 4 types of questions "even number", "odd number", "vowel letter", "consonant letter". Time will speed up your thought process.
Jade Jewel is not just an entertainment application, it is also an application to help you improve your abilities.