Company Softack created these great apps:
Physics Handbook, Periodic Table Pro, FunLearn, Periodic Table Pro HD, FunLetters, FunAnimal, FunNumber, FunLearnHD, FunNumbersHD, FunLetters-Lite, FunLearn Lite, FunNumbers Lite, periodic Table Browser, iPhysicsCalc, AstroCraft, Health & Beauty Tips, 8051 HandBook, iPhysicsCalcHD, iPhysicsCalcLite, Chemistry Handbook, Biology Handbook, Psychology Handbook, Fun Animals HD, Psychology Quiz, Chemistry Quiz App, Biology Quiz App, WOD Work Capacity Calculator, iChem Calc - Chemistry Calculators, Kitchen Tips, and others..