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Flyby
Spot launches and satellites overhead, in AR.
Flyby brings spaceflight to life. Real-time launch simulations, accurate satellite visibility predictions, AR sky tracking, and a live 3D globe, all tailored to your location. Get notified the moment something is about to pass overhead, then step outside and watch it happen.
Hey Product Hunt! Maker here.
Quick story on why Flyby exists. We've been building space software since 2019 (our previous app was Space Tracker), and we still kept missing rocket launches and bright satellite passes happening right over our heads. A Falcon 9 would lift off from the Cape, and someone on Twitter would post a photo of the exhaust plume from their backyard 200 miles away. We'd think, wait, we could have seen that?
Turns out the apps that are supposed to help you follow this stuff don't actually help you see any of it. Launch trackers give you a countdown and a YouTube embed. Satellite trackers happily tell you the ISS is "overhead" at 9:47 PM, but not whether the sun angle, your light pollution, or the satellite's actual brightness make it visible from where you're standing.
So we built the app we wanted.
Both of us are software engineers with aerospace backgrounds (one of us worked on Artemis), so we got obsessive about the visibility math. Flyby runs full calculations: orbital geometry, solar illumination, atmospheric conditions, satellite magnitude, your local light pollution. You only get notified for passes that are genuinely worth going outside for. For launches, we compute exact T+ windows for when the vehicle enters your line of sight from your location, which direction to face, and how high to look.
Open the app, point your phone at the sky, and AR puts a marker on whatever you're trying to spot. A few other things we're proud of:
- Real-time ascent simulations with haptic liftoff, stage separations, and live telemetry on a 3D globe
- Live Activities on the lock screen and Dynamic Island for both launches and passes
- Customizable notifications by agency or company
We'd love your feedback, especially if you've used other space apps and have opinions on what they get wrong. Happy to answer anything!
About Flyby on Product Hunt
“Spot launches and satellites overhead, in AR.”
Flyby was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #97 on the daily leaderboard. Flyby brings spaceflight to life. Real-time launch simulations, accurate satellite visibility predictions, AR sky tracking, and a live 3D globe, all tailored to your location. Get notified the moment something is about to pass overhead, then step outside and watch it happen.
On the analytics side, Flyby competes within Space, Travel and Augmented Reality — topics that collectively have 95.5k followers on Product Hunt. The dashboard above tracks how Flyby performed against the three products that launched closest to it on the same day.
Who hunted Flyby?
Flyby was hunted by Flyby Spaceflight. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of Flyby including community comment highlights and product details, visit the product overview.
Flyby Spaceflight