MyneWallet: Budget Tracker
Private, offline-first zero-based budget tracker and personal finance vault built with Flutter and encrypted SQLite.
MyneWallet is a local-first, zero-telemetry personal finance vault and zero-based budgeting app for Android, built with Flutter.
Unlike modern finance apps that require continuous bank scraping, monthly cloud subscriptions, and invasive telemetry SDKs, MyneWallet operates on a strict architectural constraint: the network is disabled by default.
Key Flutter Engineering & Architecture Highlights:
• Local-First & Zero Telemetry: Built with zero Firebase and zero third-party analytics. All transaction ledgers are stored securely in an on-device encrypted SQLite database.
• Exact Integer-Cent Arithmetic: Financial math avoids IEEE 754 floating-point errors by tracking all balances in 64-bit integer minor units (cents).
• True Zero-Based Budgeting (ZBB): Enforces purposeful envelope allocation where every dollar is given a job before the month starts, powered by a deterministic Auto-Assign engine.
• Custom Client-Side Visualizations: Includes GitHub-style activity heatmaps, category breakdown donuts, and Sankey cash-flow diagrams rendered smoothly via Flutter's rendering pipeline.
• Anti-SaaS Model: The core budgeting engine is 100% free with an optional one-time Lifetime unlock.
Web Companion:
We also maintain 10 client-side financial calculators that run in the browser with zero cookies or tracking: https://thebrinklabs.com/tools/
Unlike modern finance apps that require continuous bank scraping, monthly cloud subscriptions, and invasive telemetry SDKs, MyneWallet operates on a strict architectural constraint: the network is disabled by default.
Key Flutter Engineering & Architecture Highlights:
• Local-First & Zero Telemetry: Built with zero Firebase and zero third-party analytics. All transaction ledgers are stored securely in an on-device encrypted SQLite database.
• Exact Integer-Cent Arithmetic: Financial math avoids IEEE 754 floating-point errors by tracking all balances in 64-bit integer minor units (cents).
• True Zero-Based Budgeting (ZBB): Enforces purposeful envelope allocation where every dollar is given a job before the month starts, powered by a deterministic Auto-Assign engine.
• Custom Client-Side Visualizations: Includes GitHub-style activity heatmaps, category breakdown donuts, and Sankey cash-flow diagrams rendered smoothly via Flutter's rendering pipeline.
• Anti-SaaS Model: The core budgeting engine is 100% free with an optional one-time Lifetime unlock.
Web Companion:
We also maintain 10 client-side financial calculators that run in the browser with zero cookies or tracking: https://thebrinklabs.com/tools/
