What's New in CashFlow

A massive update that introduces Google Drive Cloud Backup, major engineering improvements, and a fully redesigned web experience. This release represents dozens of fixes and refinements across the entire codebase.

☁️ Cloud Backup (Premium)

• Google Drive Integration: Securely connect your Google Account via OAuth2 (PKCE) and backup all financial data to your personal Drive.
• One-Tap Backup & Restore: Backup all transactions, accounts, budgets, goals, and settings with a single tap. Restore on any device.
• Auto-Backup Toggle: Enable daily automatic backups so you never lose data again.
• Premium Gate System: Freemium model — core features stay free forever, Cloud Backup is a premium upgrade.

🧮 Safe Math Engine Refactor

• Floating-Point Elimination: All currency calculations now use integer-based arithmetic via custom safeAdd, safeSub, safeMul, safeDiv functions.
• Zero Rounding Errors: Guarantees precision for values up to $9 quadrillion. No more floating-point drift.
• Refactored storage.ts: All balance calculations, account updates, and budget computations migrated to safe math.

⚡ Performance & Optimistic UI

• Optimistic Updates: UI now updates synchronously before disk writes complete. Transactions, account balances, and budgets reflect instantly.
• Cash Flow Projection Fix: Corrected projection logic for accurate future balance forecasting.
• Net Worth Logic Fix: Fixed calculation to properly include all account types (bank, cash, investment, e-wallet) minus credit liabilities.

🛡️ Validation & Robustness

• Input Validation Layer: Added comprehensive validation for all form entries — transactions, accounts, budgets, goals, and recurring rules.
• Custom Category Validation: Prevents duplicate keys, empty names, and invalid icon/color combinations.
• Error Boundaries: Graceful error handling across all data operations with user-friendly alert messages.

📦 New Features

• Custom Categories: Create unlimited income/expense categories with custom icons, colors, and labels.
• Export & Import Data: Full JSON export/import for manual backup and data portability via system share sheet.
• Recurring Transactions: Automated daily/weekly/monthly/yearly recurring income and expenses.

🌐 Web Landing Page

• Full Enterprise Website: Built with Next.js + Tailwind CSS — includes About, Careers, Docs, Features, Contact, Privacy, Terms, and Blog.
• Agency-Grade Blog: Interactive reading experience with animated progress bar, sticky table of contents with active section highlighting, and floating share buttons.
• Responsive Footer Redesign: 4-column enterprise layout with newsletter signup, responsive stacking on mobile.
• Enterprise Content: All pages expanded with professional, in-depth content suitable for investor and enterprise audiences.

🔧 Build & DevOps

• Configured EAS Cloud Build for Android APK generation.
• Added .easignore to exclude node_modules/ and web-landing/ from cloud uploads.
• Updated all Expo SDK 54 dependencies to latest compatible versions.
• Full CashFlow rebranding across all web pages and components.

The public launch of CashFlow. After months of development and beta testing, we are ready to change how you track your wealth.

🚀 Major Features

• Safe Math Engine: Replaced standard floating-point arithmetic with a custom integer-based library. Zero rounding errors, guaranteed.
• Local-First Architecture: All data stored on-device via AsyncStorage. No servers, no cloud dependency, no data leaks.
• Optimistic UI: Interactions are instant — UI updates synchronously while persisting to disk in the background.
• Multi-Account Support: Track Cash, Bank, Credit Card, Investment, and E-Wallet accounts in one place.
• Budget Tracking: Set weekly, monthly, or yearly budgets per category with real-time spent tracking.
• Financial Goals: Define savings goals with targets, deadlines, and visual progress bars.
• Recurring Transactions: Automate salary, subscriptions, and recurring bills with daily/weekly/monthly/yearly schedules.
• Custom Categories: Create unlimited custom income/expense categories with custom icons and colors.
• Export & Import: Full JSON export/import for manual backup and data portability.

💅 Design & UX

• Dark Mode native support with premium glassmorphism aesthetic.
• Haptic feedback for all major interactions.
• Fluid animations using React Native Reanimated 3.
• Responsive layout optimized for all screen sizes.

🛡️ Data & Security

• Input validation on all form entries to prevent data corruption.
• IDR currency formatting with locale-aware number display.
• Safe deletion with confirmation dialogs for destructive actions.