The hardware
Audio in. Recommended: the Flight Kit — our custom-coded Stratux — streams live cockpit audio, ADS-B traffic and GPS to your iPad over Wi-Fi. Minimum: the audio cable into your panel or headset jack.
An Obelisk Aerospace product
Stay ahead of the aircraft.Every call, on your side.
Obelisk is a complete cockpit package — our custom-coded Stratux, the iPad app, and a subscription — that turns live ATC radio into a real-time picture of your clearances, traffic and route. All it takes to start is a cable into your audio panel.
- Custom Stratux, plug-and-fly
- Private, on-device
- iPhone & iPad
20:15 100%
Obelisk
Map · N345AB
12.5×
faster than real-time, on-device
9.1%
word error rate you can trust
100%
on-device — audio never leaves
30 NM
live traffic awareness radius
Built for the cockpit.
From GA singles to rotor-wing, Obelisk is made to ride along in real aircraft — listening to the same radio you are, on the same panel you fly.
Footage: Aerial over Virginia — Sudeep Gowda, CC BY 3.0 · Cessna 152 takeoff — Miha Lesjak, CC BY 3.0 · Helicopter over London — Acabashi, CC BY-SA 4.0
What you need to fly with Obelisk.
Obelisk lives in the cockpit, so it has to hear the radio. Three parts get you there: the hardware that feeds it audio, the app that makes sense of it, and a subscription that unlocks the full stack.
The app
Obelisk for iPhone & iPad — on-device transcription, correction, callsign linking, live charts and the Electronic Flight Bag. Nothing leaves the aircraft.
The subscription
Obelisk Pro — $20/ month, 30-day free trial. Unlocks live correction, traffic, the Flight Bag, offline charts and every model.
Recommended configuration
Reserve your kitThe Flight Kit does it all— live audio, traffic within 30 NM and WAAS GPS, with nothing to plug in mid-flight. The audio cable is the minimum to get started; add a Stratux later.
Your comms, linked to your charts.
The radio is the one channel you can't pause, replay or glance at twice. Obelisk closes the loop from what you hear to what you fly — and it knows which calls are yours. Your filed plan stays on the chart the whole time; other traffic just lights up on your ADS-B; and when ATC amends your clearance, Obelisk proposes it for you to accept — it never rewrites your route on its own.
LIVE ATC · LINKEDLIVEpreview
NEW YORK APPROACHAmerican 123414:41:06
american twelve thirty four, turn left heading two seven zero, vectors for the visual
NEW YORK APPROACHSkyWest 567014:41:22
skywest fifty six seventy, cleared the ILS runway two-two left approach
NEW YORK CENTERN345ABYOU14:41:48
november three four five alpha bravo, cleared the LENDY SIX arrival, descend and maintain one-one thousand
ADS-B TRAFFIC · AAL1234
not for navigation
Lit up on your radar
Your call (N345AB) → you approve the amendmentother traffic → it lights up on ADS-B
A preview of where Obeliskis heading. The live transcript ships today; the chart & map links roll out to Pro as they land.
File your plan. It flies with you.
Obelisk isn't only a listener — it's a flight bag. Paste a ForeFlight-style route and it parses into a colour-coded plan on real VFR and IFR charts, then packs your callsign, airports and waypoints into the on-device corrector — so the calls meant for you stand out on frequency.
ELECTRONIC FLIGHT BAGFILEDN345AB
AircraftC172 / G
CallsignN345AB
DepartureKHPN
DestinationKJFK
Cruise8,000
Filedtoday
ROUTE · tap to locate on chart
AirportVORFixAirway
FILED ROUTE · KHPN → KJFK
File it once →your callsign, airports & fixes stand out in the stream
A second set of ears on every frequency.
Built for pilots and controllers who need to trust what they just heard — and stay ahead of what's coming.
Never miss a call
Every transmission is captured, timestamped and kept — so a stepped-on, rapid-fire or heavily-accented clearance doesn't slip past. Glance down or scroll back the moment you're unsure what you heard.
Comms, linked to your chartsOn the roadmap
The vision: tap an arrival to open the STAR, hear “direct BOISE” and watch it drop on the map, get cleared an approach and the plate is right there. Your radio becomes a live index into your EFB.
Know who's on frequency
Live ADS-B traffic within 30 NM, plus callsign linking — tap a callsign to filter the transcript to that aircraft's conversation, and see a green ✈ the moment they're in range.
Your flight plan, in the loop
File a ForeFlight-style route and Obelisk recognises your own callsign, airports and waypoints in the stream — so the calls that are meant for you stand out.
Accuracy you can trust
A two-tier on-device corrector cleans up misheard callsigns, runways and phraseology, grounded in real ATC knowledge and live traffic. Every edit is shown; the raw is always kept.
On-device & private
Capture, transcription and correction all run locally on the Apple Neural Engine. Your audio never leaves the aircraft — awareness you can depend on, with nothing to phone home to.
Nothing leaves the aircraft
Awareness you can depend on.
Capture, the fine-tuned Whisper model, diarization and correction all run locally — on the Apple Neural Engine and CPU. No backend to reach, nothing to phone home to, and no “no signal” page in the middle of a busy approach.
- Audio and transcripts never leave the device
- Works from any LiveATC stream, your mic, or USB
- Models download once, then it's fully offline-capable
CAPTURED · ON-DEVICE
“november three four five alpha bravo, cleared the GOPHER ONE arrival, descend and maintain one one thousand”
Logged the instant it's spoken — and soon, one tap from the plate.
Flight-deck software, in your hands.
Real screens from Obelisk on iPad — the live chart, the transcript and the flight bag, all running on-device. No mockups.
20:15 100%
Obelisk
Charts · N345AB
KHPN › LENDY SIX › KJFK
Charts & traffic
Comms, linked to your charts
Your filed route, the LENDY SIX arrival and live ADS-B traffic on real FAA sectionals — the chart engine, live, with the transcript running right on the map.
- Bundled FAA VFR & IFR charts, fully offline
- Coded arrivals & approaches with restrictions
- Live ADS-B traffic within 30 NM
Live transcript
Never miss a call
Every transmission is captured, timestamped and callsign-tagged the instant it's spoken — so a stepped-on, rapid-fire or accented clearance never slips past. Scroll back the moment you're unsure what you heard.
- 9.1% word error rate, 12.5× faster than real-time
- On-device — audio never leaves the aircraft
- Raw and AI-corrected text, side by side
Callsign linking
Know who's on frequency
Tap a callsign to isolate that aircraft's entire conversation, and watch live ADS-B traffic light up the moment it's within range. Your own callsign, airports and waypoints are recognized in the stream.
- One-tap conversation filtering
- Live ADS-B traffic within 30 NM
- Your filed plan surfaces the calls meant for you
Electronic Flight Bag
Your flight plan, in the loop
Paste a ForeFlight-style route and Obelisk parses it into a color-coded plan on real charts, then packs your callsign, airports and waypoints into the on-device corrector so the phraseology comes out right.
- ForeFlight-style route entry
- DIST · ETE · ETA · fuel at a glance
- Grounded in real ATC knowledge
The maker
Obelisk Aerospace LLC
Obelisk is engineered by Obelisk Aerospace LLC in its White Sands Research Division — where aerospace-grade sensing, on-device machine learning and human-factors design are built for the flight deck.
White Sands Research Division
Get flying.
Reserve the configuration that fits your panel. We’ll confirm the details and arrange shipping when kits are ready — you’re not charged today.
Recommended
Obelisk Flight Kit
The complete cockpit package.
$299one-time
Our custom-coded Stratux and everything you need for full in-flight awareness — audio, traffic and position, wireless to your iPad.
- Custom-coded Stratux receiver (Obelisk firmware)
- Live cockpit audio streamed over Wi-Fi
- ADS-B traffic + WAAS GPS position
- iPad yoke / panel mount
- Aircraft power cable
- Aviation audio cable (backup wired input)
Live audio · ADS-B traffic · GPS
Minimum
Obelisk Audio Cable
The least it takes to fly.
$39one-time
Plug your iPad straight into the aircraft's audio panel or headset jack and start transcribing live radio.
- Aviation-grade audio patch cable
- Feeds live radio straight into Obelisk
- Works with any headset jack or audio panel
- Add a Stratux later for traffic + GPS
Live audio
Bring your own Stratux
Obelisk SD Card
Already have a Stratux?
$29one-time
Our custom firmware on a microSD — turns a Stratux you already own into a full Obelisk receiver.
- microSD preloaded with Obelisk firmware
- Turns a stock Stratux into an Obelisk receiver
- Same live audio + traffic + GPS
- Flash-and-fly — no soldering
Live audio · ADS-B traffic · GPS
Reservations only — no charge today. We’ll email you to confirm and arrange shipping + payment when your kit is ready. Or buy parts piecemeal →
Put the tower on your side.
Reserve your kit, install the app, and start your 30-day free trial. No charge to reserve.
Prefer the App Store? Get notified at launch.