Blacksquared GmbH, operating the consumer-facing Changers.com brand, is a Berlin, Germany-based independent software vendor focused on workplace wellbeing and corporate sustainability. The company was co-founded by Daniela Schiffer, Kushtrim Xhakli, and Markus Schulz, and is listed in the SAP partner ecosystem as an SAP Registered Partner with an ISV designation. Its flagship product, Changers Fit for Healthy and Sustainable Employees, is offered as a partner solution within the SAP Human Capital Management ecosystem and on the SAP Store. The Changers Fit application uses gamification mechanics to encourage employees to combine fitness, sustainable mobility, and team activities, allowing participants to earn points by walking, running, cycling, or commuting sustainably and to convert those points into climate-protection projects or rewards. The platform supports configurable challenges that companies can tailor to internal health, team-building, and CSR objectives. Public profiles describe Blacksquared as a small to mid-sized German software company operating across health promotion and climate engagement use cases for HR and sustainability functions in larger employers.