Korsu

Korsu is a dedicated household ledger designed for family managers who need to track shared expenses without the privacy risks of cloud-based accounts. Unlike generic personal finance trackers, this app focuses on multi-member attribution and local-only data storage to ensure your family’s financial history remains strictly on your device. Through a combination of rapid entry templates and category-specific budget limits, Korsu provides a clear visual map of where your household’s money goes every month.

The app utilizes a local coin system to unlock advanced tools, such as granular category budgeting and expanded quick-templates. New users start with 60 coins, and more can be earned through consistent logging or acquired via one-time in-app purchases.

Managing a household often involves multiple people spending from a single pot, making it difficult to identify exactly why the budget is leaking. Korsu solves this by attributing every transaction to specific family members and visualizing their impact through ring charts and comparative statistics. When you record a purchase, the app triggers a haptic feedback response and immediately updates a real-time progress bar that turns orange if a specific category, like groceries or entertainment, approaches its monthly limit. The system also calculates a Financial Health Score by analyzing your savings rate, logging consistency, and spending volatility over a 90-day period. This mechanism transforms raw numbers into actionable advice, suggesting specific ways to stabilize your monthly cash flow based on the categories where you are most over-extended.

You can visualize your spending intensity on a heat-map calendar or export your entire history as a CSV file for deeper analysis in external spreadsheets.

Privacy is the foundation of the experience; no registration is required, and all transaction data, member profiles, and budget settings are stored exclusively within your device’s secure storage. You can set daily local notifications to prompt evening entries, ensuring no small cash purchase is forgotten. By keeping the data offline, Korsu ensures that your family’s financial habits are never tracked by third-party servers or used for external profiling.