You've tried many personal finance apps from the App Store. None of them fits what you need, because each is someone else's idea of your money and lifestyle. So you asked AI to build the one that would, and it failed you too. It hallucinated the numbers, mangled your data, and never quite understood what you wanted.

AI fails when it has nowhere reliable to keep the numbers. OpenLedger gives it that place, a deterministic harness that holds every number in your own records.

OpenLedger is a secure bookkeeping that serves as a harness for your AI. The data source is what you already receive which are monthly statements from your banks and credit cards. Your AI reads each statement and records what it finds as double-entry bookkeeping.

Everything stays on your machine, the database is fully encrypted, and what the harness returns to your AI has PII redacted by default before it sends to AI provider. No bank logins, no bank API keys, no cloud aggregator needed, just the bank documents you already have as the source of truth.

By using this harness, your AI can build the app you never found: a budget tracker that fits your lifestyle, a subscription auditor, a retirement planner, a personal money coach. Your finance app is yours to reimagine, and everything you build reads from the same ledger, so you can keep adding without starting over.