SONEKI
Break-even calculator for cars, homes, insurance & more
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Kenta Taguchi

SONEKI - Break-even calculator for cars, homes, insurance & more

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SONEKI helps you make smarter financial decisions by calculating break-even points for major life expenses. Stop guessing — know exactly when buying a car beats car-sharing, when buying a home beats renting, or when an annual subscription pays off. - 6 calculators: Car, Housing, Insurance, Subscriptions, Appliances, Consumables - No personal info required - All data stays on your device - 7-day free trial · $2.99/month

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Kenta Taguchi
Maker
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Hi Product Hunt! I'm Kenta, the maker of SONEKI. I built this because I kept making big financial decisions (car, apartment, insurance) based on gut feeling rather than actual numbers. There was no simple tool that could tell me "at what point does buying a car beat car-sharing for MY situation?" So I built SONEKI — 6 calculators that help you find the break-even point for your biggest expenses: - Car: Own vs. car-sharing - Housing: Buy vs. rent - Insurance: Premiums vs. paying out-of-pocket - Subscriptions: Monthly vs. annual plans - Appliances: Keep vs. replace (energy savings) - Consumables: Bulk buy vs. single purchase timing No account needed, no data leaves your device. Just clear numbers to help you decide. Would love your feedback on what other calculators would be useful!