"Chemistry Formulas with Tests" is an educational Android application developed by TravelGuidance.ru. The app offers a comprehensive collection of chemistry formulas divided into five sections: Organic Chemistry, Inorganic Chemistry, Biochemistry, Physical Chemistry, and Analytical Chemistry. Users can study these formulas and then take a short final test for each section.

Each formula comes with detailed descriptions, with individual letters labeled and a color-coded indicator showing how well the user knows the formula. For example, a red indicator signifies poor knowledge, while a green one indicates excellent memorization. The app tracks users' answers, calculating the percentage of formula mastery based on their responses.

In addition to formula study and testing, the app features a unique "Smart Test" function, which presents users with 10 formulas where they frequently make mistakes. Future updates will include the ability to take tests on all major formulas, create custom formula lists to share with friends, and participate in online quizzes to compete with others.

Studying formulas with this app is designed to be engaging and gamified, with the ultimate goal of mastering each section with a 100% understanding. Good luck in your formula studies and exam preparations!