Brain Training with Numbers vs Stoichiometry

This app is a brain game designed to enhance users' memory, attention, concentration, reaction speed, and logic thinking. Its core feature focuses on memory training, where users rapidly memorize sequences of random numbers within limited time and recall them on blank screens. This brain exercise effectively stimulates users' short-term numerical memory. The brain trainer game offers multiple difficulty levels, with longer number sequences indicating higher challenges. Users must maintain intense focus and concentration during the memory tests to progress. Whether you're a brain training enthusiast or a newcomer to mental games, you'll find suitable difficulty levels to test your brain. The app is suitable for all age groups, it serves as: •A memory helper for children's educational games and early childhood intellectual development. •A shorthand test and IQ assessment tool for adults. •A brain exercise and cognitive training helper for seniors. Through progressive this brain teasers, users will: •Gradually improve memory and IQ •Experience the joy of mental games •Notice significant enhancement in:Memory recall, Shorthand skills, Rapid calculation, Judgment, Reasoning abilities. •Discover improved performance in: IQ tests, Sudoku, Schulte Grid, Digital Huarong Puzzle, Other classic brain teasers and logic games… As an offline standalone app, the app is perfect for daily spare moments. Come on and try it now!

Stoichiometry: Lab Calc is a focused chemistry calculator for study, lab preparation, and everyday quantitative work. Enter a few known values to obtain clear, easy-to-review results. Core calculations work offline. SINGLE-SUBSTANCE CALCULATIONS • Parse chemical formulas and calculate molar mass• Convert between sample mass, substance mass, amount of substance, and purity• Calculate molarity, mass fraction, volume, and density• Supports common formula notation, including parentheses and hydrates REACTION CALCULATIONS • Enter and automatically balance a chemical equation• Choose a reference substance and calculate quantities from stoichiometric ratios• Work with equivalents, purity, concentration, volume, and density• Save result tables as images CUSTOM REAGENT LIBRARY • Store reagent names, formulas, brands, catalog numbers, images, and common properties• Search by name, formula, brand, or catalog number• Apply saved reagents directly to calculations• Back up and restore local reagent records Reagent data stays on your device. No account is required, and experimental data is not uploaded. The custom reagent library is available as a one-time in-app purchase that permanently unlocks the feature.