Gavi has announced a partnership with Nexleaf Analytics to create a planning tool to help countries make evidence-based decisions on the purchase and maintenance of vaccine refrigerators. The Gavi-owned planning tool will be available to all Gavi countries as they make their vaccination supply chain equipment decisions. Nexleaf will contribute software engineering and analytics know-how, as well as lessons learned from our years of experience working directly with Ministries of Health. Funding to implement in initial countries will come from the Gavi Matching Fund provided by the Bill and Melinda Gates Foundation. This project also receives support from Google.org, a Nexleaf funder since January 2015, for tool development and engineering.