This app is free. No in-app purchase. This app does not need any system permission. This app does not need internet connection. EzCalc for Android helps you to do basic and advanced math calculation. This app includes the following calculators: • Math Calculator with regular and scientific functions. The app stores the calculation history. • Fraction Calculator • Fraction and Decimal converter • Unit Converter • Tips Calculator • Discount Calculator • Percentage Calculator • TAX/VAT/GST Calculator • Loan Calculator • Compound Interest Calculator • Programmer Calculator • Permutation and Combination Calculator • Standard Deviation Calculator • Arithmetic Sequence Calculator • Geometric Sequence Calculator • Fibonacci Sequence Calculator • Heat Index and Wind Chill Calculator The app supports dark theme and light theme. Please email question and feature request directly to developer at pfinanceapp@gmail.com. We actively support users.