I built an offline personal finance app that runs as a single HTML file

Hi everyone,
Over the past few months, I've been building Budget Pro, a personal finance dashboard designed with a simple idea in mind:
Your financial data should stay on your device.
Instead of requiring an account, cloud sync, or a monthly subscription, Budget Pro runs as a single HTML file that works entirely offline.
Some of its features include:
Income & expense tracking
Bills & debt management
Savings goals
Financial Health Score
Multiple currencies
7 languages
Light & dark themes
I also wanted people to experience the product before buying, so I created a Free Interactive Preview that anyone can try.
I'm not looking just for promotion—I'd genuinely appreciate feedback from fellow indie makers.
Does the offline-first approach make sense to you?
Would you use a one-time purchase finance app instead of a subscription?
Free Interactive Preview: https://momentumstudio2026.sell.app/product/budget-pro-free-interactive-preview⁠�
I'd love to hear your thoughts. Thanks! 🚀