Open-source tool backtests rent vs. buy decisions across 241 US metros

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A developer has released an open-source tool called RunTheNumbers that backtests the rent-versus-buy decision across 241 US metropolitan areas. The project uses pinned historical data to ensure reproducible and consistent results over time. It is hosted on GitHub and allows users to compare the financial outcomes of renting against buying in specific local markets. The tool aims to provide data-driven clarity on a question that is often debated with conflicting anecdotal evidence. It was shared on Hacker News, where it attracted early community attention.

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