Fintech · Mobile App·2024

Luminos

Privacy-first investment portfolio tracker designed for individual investors who refuse to compromise on security.

React NativeSupabasePostgreSQLFinancial APIs

The challenge

Individual investors lacked a clean, secure, and privacy-focused way to track their diversified assets — stocks, crypto, real estate, fixed deposits — in a single dashboard without handing over bank credentials to third parties. Every existing option either required account linking or was cluttered with ads and upsells.

Our approach

We built a mobile-first application around manual and semi-automated entry with real-time market syncing. The architecture puts data privacy first: encrypted local storage, no third-party data brokers, and a backend designed so that even we can't read a user's portfolio. The UI is intentionally minimal — no noise, no dark patterns.

What we built

  • Unified portfolio dashboard across all asset classes
  • Asset allocation analytics with visual breakdowns
  • Automated fixed deposit maturity calculations
  • Real-time market price sync without account linking
  • Encrypted local-first data architecture

Outcome

Launched on iOS and Android with strong early retention among privacy-conscious investors. Users consistently cite the absence of ads and the clean interface as the primary reasons they stayed — and referred others.

4.8★App Store rating
0Third-party data brokers
2Platforms at launch