Reviews for previous versions include:Better than my Chemistry teacher *****by - Version 1.1 - Sep 30, 2012The best chemistry app out there. I love that I don't need to have Internet connection to be able to view videos, unlike most of the more expensive ones. Thank you!!!!--The app gives you 24 videos to help you with a first course in Chemistry.Videos are available offline so you can view on the bus with no problems.Handwritten notes and diagrams easily viewed onscreen.- each video covers a different topic- videos build on each other with more complicated subjects being covered later- notes provided so you can review how a problem was solved- notes available for printing via website- areas covered include: + introduction to periodic table + atoms + covalent bonding + naming chemical formulas + symbols for atoms + isotopes + hydrocarbons + ionic bonding and conductivity + properties of substances + balancing equations + group ions + acids and alkalis + neutralisation + relative atomic mass and the mole + mass of 1 mole + mass of many moles + moles and concentration + moles and equation questions 1 + moles and equation questions 2All videos created by an experienced tutor.Feedback for other apps includes:"Awesome app, but could you include the entire table? Radicals? Acids? Keep developing!""Indispensable for chemistry questions. *****"