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amortization-schedule

Solvra is an open-source financial modeling engine designed to simulate loans under a controlled, transparent amortization system. It applies a capped-interest rule based on a 15-year maximum effective interest window and redistributes total interest evenly across the full loan term, producing predictable, linear payment structures for scenario analysis, affordability testing, and structured financial planning. https://roxanneardary.com/solvra/

HypoNavi: Mortgage Calculator — iPhone and Android app to compare mortgage offers, model refinance break-even, stress-test post-fixation rate hikes, and run extra-payment scenarios. Standard annuity formula. Free, offline, no tracking. By Lapnito.