Tau Sigma Trading
Tau Sigma Trading, LLC

We build mobile apps worth opening twice.

Tau Sigma Trading, LLC is a small, independent app studio. We've got a particular interest in trading and markets education — but really, we just like building good, focused mobile apps.

Timing & variance, visualized
Design first Small team Mobile-first

About

A small studio, a growing app lineup

Tau Sigma Trading, LLC is a small, independent app studio. We spend a good chunk of our time on trading and markets education, but we're not limited to it — if it's a good, focused idea for a mobile app, there's a decent chance we're already building it.

Design first

We'd rather ship one thing well than everything at once — every screen gets thought through before it ships.

Small team, real ownership

Every app is designed, built, and supported by the same small team — not outsourced, and not abandoned after launch.

Mobile-first craft

Small, focused apps built for a phone in your hand — fast, legible, and free of unnecessary noise.

Apps

What we're building

Follow The LeaderIn development

A read-only, educational companion app for following public prediction-market leaderboard activity. It surfaces when top-ranked traders open unusually large or high-conviction positions, for informational purposes only — it does not place trades and is not affiliated with or endorsed by any market or exchange it references.

Ledger LinesConcept

A minimal daily journal for logging your own trades and decisions, so you can actually learn from the pattern later.

Quiet HoursConcept

A small focus utility for blocking distractions during deep work — no trading angle, just a good mobile app.

+

A few more ideas are in the sketch phase. If it's a good, focused idea for a mobile app, there's a decent chance we're already poking at it.

Leaderboard · Today
Concept illustration — not final UI

Where the name comes from

Tau & sigma

τσ

Tau and sigma are common shorthand in statistics and signal processing — time and spread, timing and variance. That's the spirit behind the name: markets are ultimately about timing decisions under uncertainty, and good tools should help people reason about both instead of promising to remove them.

Contact

Get in touch