Modern curriculum requires students to purchase expensive handheld calculators, which has created a market with little competition or incentive for improvement. The purpose of this project was to create a competitive free alternative to be used outside the classroom for those who do not have the economic stability to purchase, for example, a TI-82, which costs approximately $100. Calculat3d is an Android application that matches the general-purpose functionality of the TI-82, including calculations, basic statistical functions, graphing, and creating programs. Additionally, a programming language and interpreter were created so programs can be written inside Calculat3d and be used alongside calculations, thus expanding the functionality of the calculator. Graphing functionality is also included in Calculat3d but expanded to three dimensions as opposed to the two-dimension limited TI calculator.