Fasten Tools is an Android application developed by WholeDetail, available for free in the Education & Reference category. This app is designed to help students solve basic math problems in algebra and geometry, as well as some higher mathematics ones. It offers a variety of tools to simplify mathematical calculations, convert units, and solve algebra. Each element of the app is highly customizable to suit every taste. The app features algebra and geometry solver, a full-fledged unit converter, as well as multiple text tools. The geometry section allows you to quickly calculate various parameters of figures, such as the radius of inscribed and circumscribed circles, area, perimeter, and angles. The algebra section offers tools like fraction solver, quadratic equations, and arithmetic progression. The app also provides tools to convert decimal numbers, work with matrices, and solve Boolean expressions. In addition, it offers tools for text manipulation and miscellaneous tools such as barcode generator, time difference, and time addition.