BizBunker is an offline finance app for freelancers & solopreneurs. It calculates your Runway D-Day — how many days until your business runs out of cash if revenue stops. No account, no cloud. AES-256 encrypted. ■ Runway Dashboard — cash survival simulation ■ Cost Diet Simulation — cut costs, extend runway ■ Dependency Graph — spot concentration risk ■ Tax Bunker — separate tax from operating cash ■ Time Machine Backup — local snapshots 7-day free trial · One-time $9.99.