Built on the Belief That Financial Data Demands Mathematical Truth
Most modern personal finance applications trade precision for convenience-relying on floating-point approximations, opaque AI summaries, and continuous banking telemetry tracking. FinBrain was created to provide a transparent, cent-exact alternative.
Our Architectural Principles
Four foundational commitments that guide every feature we design.
1. Deterministic Math Over Approximations
Money calculations must never be subject to IEEE 754 float drifts. Every balance, transaction split, and budget rollover in FinBrain is calculated using exact signed integer minor units.
2. Explainable Intelligence With Provenance
AI should explain its reasoning, not act as an unchallengeable black box. Every category suggestion displays visible confidence scores and can be inspected or overridden with a single click.
3. Tenant Isolation & Privacy by Architecture
Data security is enforced by database engine constraints via PostgreSQL Row-Level Security and isolated object storage partitions, rather than relying solely on application middleware.
4. Absolute Data Ownership & Portability
Your data belongs to you. You can export complete, formula-safe CSV records at any time or permanently delete your account with a guaranteed irreversible purge of all associated records.
Built by OSM Digital
FinBrain is engineered and maintained by OSM Digital, a technology and digital craft studio focused on building high-trust, privacy-respecting software products.
Ready to experience FinBrain?
Create an account to start tracking your ledger with mathematical precision.