BioCaL vs Kemistri

Experimental research in molecular biology requires fundamental techniques such as restriction enzyme digestion and DNA ligation, which are essential for recombinant DNA technology and widely practiced in laboratories worldwide. Mastering these techniques is crucial for progress in biological research. Our app simplifies these processes by providing precise volumes for each component required in restriction digestion and ligation reactions. Users no longer need to calculate DNA volumes manually; instead, they input the desired DNA concentration, and the app calculates the necessary volumes for your reactions. The app then conveniently provides these volumes, so you can quickly set up your reactions ready for incubation at the appropriate temperatures in Eppendorf tubes. Additionally, our app offers the necessary DNA volumes for DNA assembly reactions, accommodating up to six different DNA fragment assemblies when constructing and using two or more DNA molecules. This user-friendly app ensures seamless operation, allowing instant use without the need for detailed instructions. It also guides users in sampling volumes to normalize mass and molar concentration across tubes with containing different DNA concentrations and sizes. Furthermore, it provides options for calculating various physical quantities of DNA and RNA of interest. Please note that all calculations involving DNA experiments are performed on double-stranded DNA molecules in BioCaL. The app also includes features for normalizing cell optical density to adjust the number of cells taken from different samples, as well as evaluating plasmid DNA copy number per cell and cosmid packaging efficiency, facilitating thorough analysis and efficient experiments.

Chemistry does not have to be boring, confusing or stressful. Kemistri is an interactive chemistry learning game that helps students understand important concepts, practise problem-solving and enjoy learning through guided gameplay. BUILD UNDERSTANDING, NOT JUST MEMORY Kemistri acts as a friendly learning guide, helping you build strong chemistry foundations instead of simply memorising facts and formulas. Through interactive challenges, you can: • Explore the periodic table • Understand atomic structure and electron arrangement • Build electronic configurations step by step • Apply electron-filling rules • Construct molecules and chemical structures • Identify different types of chemical reactions • Practise balancing chemical equations • Explore periodic trends • Learn VSEPR theory and molecular geometry • Understand hybridisation • Explore acids, bases and the pH scale • Solve chemistry problems logically Helpful explanations and hints guide you when needed, keeping learning rewarding rather than frustrating. INTERACTIVE CHEMISTRY ACTIVITIES Kemistri contains a growing collection of chemistry games and challenges, including: • Placing elements in their correct periodic-table positions • Arranging elements into the correct groups and periods • Building electronic configurations for different atoms • Filling atomic orbitals using electron rules • Constructing molecules • Recognising reaction types • Balancing chemical reactions • Exploring atomic radius, ionisation energy and electronegativity • Learning molecular shapes and chemical bonding • Experimenting with interactive chemistry tools Each activity introduces concepts through interaction, repetition and progressively more challenging levels. DAILY LEARNING AND DISCOVERY Keep learning with daily chemistry challenges, build your study streak and unlock achievements as you progress. Explore science legends, chemistry history, fascinating facts and jokes that make learning more memorable and enjoyable. MADE FOR CHEMISTRY REVISION Kemistri is suitable for: • School chemistry revision • Students beginning to learn chemistry • GCSE, A-level and equivalent learners • Daily concept practice • Curious learners who enjoy science Its calm, game-based approach makes revision more enjoyable and helps students practise without the pressure of a traditional test. LEARN AT YOUR OWN PACE Whether chemistry is completely new to you or you want another way to revise familiar topics, Kemistri allows you to progress gradually. Start with the fundamentals, complete interactive challenges and build confidence as new topics are introduced. BUILT WITH PASSION Kemistri is created by a small independent team focused on making science education more engaging and accessible. Your support helps us develop new chemistry content, improve the experience and expand language access. START LEARNING TODAY Explore the periodic table, atomic structure, electronic configurations, molecules, reactions and other core chemistry concepts in a smarter and more enjoyable way. Download Kemistri and begin your chemistry learning journey today. Levels 1–2 are free to play. Access to levels 3 onwards and some additional features requires a subscription. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.edbetter.uk/mobile-privacy/