
Description: Mathdroid is a mobile app for solving math problems and graphs. It has a clean interface and supports basic arithmetic, algebra, trigonometry, graphs, and unit conversions. Good for students.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Design Calculator is a free online tool to help designers, architects, and engineers quickly calculate dimensions, scale drawings, and estimate material costs for projects. It includes features like unit conversion, calculating room and furniture dimensions, stair design, and estimating material quantities.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API