Built for the
serious climb
Every position you already hold, surface by surface. See it, plan it, keep the record, and share it, all without leaving the climb.
Vantage. The whole instrument in one frame.
Every open position drawn against its route, in a single glance.
Built to
terminal standard
A tracker just shows you a number. An instrument earns the bar: it streams in real time, it can never touch your funds, it runs from the keyboard, and it would rather mark a figure stale than fake it.
Keys live only in your macOS Keychain. Never in a backup, never on a server.
A close the venue cannot confirm lands estimated, then self-heals to the exact figure when the venue returns. Never a fake number.

Every climb is kept.
Even the falls.

Never wrong.
Never dark.

Watch the level,
not the noise.
From plan to
reflection
Six elevations, walked in order. Provision, climb, and keep the record of every move.
Provision at Camp
Set the day’s intention and plan the climb before you take a single position.
Climb on Summit
Hold every position against its route. See exactly where you stand, always.
Reflect on Trail
Every climb preserved, win or loss, with the thesis you traded on.
Shipped,
not promised
There is no roadmap to point at. Only the instrument as it stands today, every line built and run by the maker before it ships to you.
The first ascent
Camp to Summit. The instrument runs owned outright, entirely on your hardware.
Trail
Every closed climb kept with the thesis you traded on, win or loss, so the record can be read instead of relived.
Honest degradation
When a price can no longer be trusted, the instrument marks it stale rather than guessing. Never wrong, never dark.
Money mask
Clouds every figure for a screenshot while prices and percentages stay live. Your size, never public.
Hyperliquid, read-only
A third venue connected. Positions, entries and liquidation levels drawn on the same route as everything else.
Every line here was used by the maker before it reached you. That is the only proof Tarn offers, and the only one that matters.
