

The Challenge
Most tracking apps hand you isolated charts — a sleep line here, a mood line there — and leave you to guess how they relate. People want to know what actually moves how they feel, not just stare at numbers. And health data is exactly the kind of thing that shouldn’t be uploaded to someone else’s server.
Our Approach
Meridian is a quick daily check-in — sleep, energy, mood, focus, stress, and more — that takes about fifteen seconds. From your own history it builds a living signal network, showing which parts of your day move together, and a correlation engine turns that into plain-language findings. Everything runs on-device: no account, no login, no server.
Key Features
- 15-second check-in — Log every signal each day with minimal friction, so the data actually accumulates
- Signal network — See which parts of your day are connected, not just isolated charts
- Insights from your patterns — A correlation engine surfaces plain-language findings drawn entirely from what you’ve logged
- Tomorrow, forecasted — As history grows, Meridian shows how today tends to shape how you’ll feel
- Research-backed context — Findings are paired with a built-in knowledge base of the underlying science
- Private by design — Offline-first, no account, no tracking, no ads; your logs live on your device and export only when you choose
Results
Meridian turns scattered daily check-ins into a personal map of cause and effect — making it clear what’s actually shaping how you feel, without ever leaving your device.