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Features:

• Smart Debt Simplification ("Simplify Debts"): An advanced ledger routing algorithm that automatically minimizes the total number of transactions required within a group to settle balances.
• Flexible Bill Splitting Mechanics: Supports unequal splitting structures including exact amounts, percentages, shares, or multiple concurrent payers on a single receipt.
• Multi-Currency Engine: Real-time exchange rate integration allowing users to log expenses in foreign currencies while automatically converting them to the group’s base currency.
• OCR Receipt Scanner: Optical Character Recognition (OCR) system that allows users to snap a photo of a restaurant or grocery receipt and instantly itemize lines to individual friends.
• Append-Only Transaction Ledger: A fully transparent edit history log with soft-delete capabilities, ensuring financial audits remain clear and uncorrupted.

Challenge:

• The Challenge: Unlike a social media feed, financial data has a zero-tolerance policy for inaccuracies or lag. If two users edit or delete the same group expense simultaneously, it can corrupt net balances.
• The Solution: Designing an atomic, append-only ledger on a highly consistent relational database, implementing strict row-level locking (SELECT FOR UPDATE) to prevent race conditions during concurrent edits.
• The Challenge: Balancing revenue with product utility. Transitioning features (like daily entry limits or receipt scanning) to a "Pro" premium subscription model frequently triggers immediate backlash and drops in app ratings.
• The Solution: Carefully designing the "paywall conversion wall" to clearly convey value-added premium perks (like premium charts or transaction imports) without cutting off the fundamental daily usability required by free users.

Skills/Tech: Skills/Tech: Client Consultation, UI/UX Design, Responsive Web Design, Wireframing & Prototyping, Inter Font Integration, Front-End Development, Cross-Browser Optimization