Mortgage-Boost is a free web-based mortgage calculator focused on extra payments and amortization visualization. Launch signal is minimal (single Reddit thread in r/SideProject), with no evidence of viral traction, user adoption, or revenue claims.

One insight: Product is a commodity tool (mortgage calculators are abundant); momentum is low, no monetization signal detected, and the founder distribution claim ('escape AdSense loop') suggests this is a CPA/ad-arbitrage play rather than a fundable business.