Flight simulation companion

Every flight.
Properly recorded.

A lightweight map, career logbook, replay, landing analysis, briefing and route planner for X-Plane and Microsoft Flight Simulator — with secure access from your iPhone.

Windows installer · iPhone installs from Safari, no App Store needed · Free and open source

Simulator telemetry · example layout
EGLL → KJFK
B77W · recorded from your simulator, not demo traffic
35 000Altitude ft
481Ground speed kt
287°Heading
0Vertical speed fpm

Connectivity, aircraft and position come from the bridge. If it is offline, Stratos says so instead of inventing data.

Built for the way sim pilots actually fly

Recorded data first. Estimates are labelled. Nothing is uploaded unless you pair a phone.

◉

Live map & traffic

Public ADS-B traffic, airports, navaids, charts and METAR/TAF. Your own aircraft appears when the bridge is connected.

◈

Career logbook

Hours, distance, airports, aircraft, routes and records, calculated once from your real flights without double counting.

↺

Flight replay

Scrub through the recorded track with a moving aircraft, altitude/speed profiles and clear markers for recorded versus interpolated values.

↘

Landing analytics

Touchdown rate, ground speed, runway and distance from the threshold where the data supports it — with per-aircraft thresholds.

☁

Briefing & routes

Build a route, validate waypoints, import/export PLN, FMS and GPX, then brief weather with source and freshness.

▤

Phone live view

A secure PWA reads telemetry through an outbound relay. No inbound port, no command channel, no App Store account.

Install Stratos

The website, Windows app and iPhone app use the same application files, so features stay consistent.

Windows

Desktop app

  1. Download Stratos-Setup.exe.
  2. Run the installer. SmartScreen may warn because the build is not code-signed — choose More info → Run anyway.
  3. Launch Stratos. The simulator bridge starts with the app.
Download installer

All releases: GitHub Releases ↗

iPhone

Add to Home Screen

  1. Open Stratos in Safari.
  2. Tap Share, then Add to Home Screen.
  3. Open the icon and connect it to your PC in Pilot → Settings → Phone access.
Open in Safari ↗

Needs HTTPS for installation. Live telemetry needs the relay and the desktop bridge running.

Browser

Use it now

  1. Open the tracker — no install.
  2. Browse public traffic and airports.
  3. Open Pilot for the logbook, replay, landings and flight planning.
Open Pilot ↗

Your logbook is stored locally in the browser or the desktop app.

Simulator setup

X-Plane 11/12: Settings → Data Output, enable rows 3, 17 and 20 to UDP port 49003 on the PC running the bridge. MSFS 2020/2024: start a flight; install the optional SimConnect Python package once if available. The bridge reports exactly which source is connected and when telemetry goes stale.

Phone relay and privacy

The desktop bridge pushes snapshots outbound to a relay you host. The phone pairs with a short-lived code and receives a separate read token. The relay has no command channel to the PC, tokens are hashed at rest, and the bridge is never exposed to the internet. Pairing and revocation are in Pilot → Settings.