
Description: Free42 is an open-source programmable calculator app designed to emulate the HP-42S calculator. It provides RPN mode, programming capability, expandability via packages, and accurate emulation of the original HP-42S.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Solve is a free calculator app for Android and iOS that has a colorful and intuitive interface. It includes a basic calculator as well as converters, date calculators, and other specialty tools. The app is designed to be easy to use while also offering advanced math and conversion features.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API