👋 Hey Product Hunt community! I’m excited to launch Calculator Note Vault—a multi-functional notepad calculator, cash log expense tracker, and secret calculator vault designed for Android. Standard basic calculators don't offer history, text labels, or security. Calculator Note Vault merges a full math calculator with a spreadsheet-like notepad, project estimators, and an offline private notes vault. 🔑 Core Features & Keywords: Smart Notepad Calculator: Type math expressions naturally line-by-line with text labels (e.g., Coffee $4 + Lunch $12). Real-time auto-calculation shows answers without pressing the equals sign. Cash Log Expense Tracker: Instantly convert math expressions into ledger entries. Track daily income, business expenses, and cash flow, then export data directly to CSV files. Secret Note Vault: Enter a private PIN into the hidden calculator interface to unlock a secure, encrypted folder for your personal notes, checklists, and private files—100% offline. Financial Math & Estimators: Includes built-in formulas for profit margins, markup, loan payments, VAT/tax, unit conversion, and construction estimators (concrete, paint, flooring). If you need an offline calculator app, a daily expense manager, or a hidden secret vault for confidential notes, give it a try on Android! I’d love your feedback, feature requests, and suggestions. What other math tools or privacy features would you like to see? Thanks for your support! 🚀

Calculator note Vault

Multi Purpose Encrypted Calculator Note

Multi Purpose Encrypted Calculator Note