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Skyty
Your flight's altitude, ground speed, nearest airport + ETA
Skyty turns your iPhone into an offline flight instrument. See your real altitude above ground, ground speed, heading, nearest airport, and ETA — all calculated on-device using NASA terrain data. No internet, no flight number, no tracking. Just GPS.
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About Skyty on Product Hunt
“Your flight's altitude, ground speed, nearest airport + ETA”
Skyty launched on Product Hunt on April 22nd, 2026 and earned 66 upvotes and 3 comments, placing #33 on the daily leaderboard. Skyty turns your iPhone into an offline flight instrument. See your real altitude above ground, ground speed, heading, nearest airport, and ETA — all calculated on-device using NASA terrain data. No internet, no flight number, no tracking. Just GPS.
On the analytics side, Skyty competes within Travel, Maps and GPS — topics that collectively have 55.3k followers on Product Hunt. The dashboard above tracks how Skyty performed against the three products that launched closest to it on the same day.
Who hunted Skyty?
Skyty was hunted by Kim Engels. 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 Skyty including community comment highlights and product details, visit the product overview.
Hey Product Hunt 👋 I'm Kim, a solo dev from Zürich.
I built Skyty because I kept wondering the same thing on every flight: how high are we actually flying right now? Not the cabin display altitude. The real height above the ground below us.
Turns out you can figure this out with just GPS. Your phone knows its position, and NASA published elevation data for most of the planet (SRTM). Subtract one from the other, and you've got your altitude above ground level. No internet required.
That's basically the whole app. Skyty runs completely offline — no account, no flight number lookup, no data connection. You put your phone in airplane mode, and it works. It shows you:
Your real altitude above ground (AGL)
Ground speed and heading
Nearest airport + distance
Estimated arrival time
Sun position (useful for choosing a window seat)
SOS with your exact coordinates if something goes wrong
The whole thing is native Swift, no external dependencies, runs on iPhone. I'd love to hear what you think — especially if you're a nervous flyer or an aviation nerd. Both camps have been surprisingly enthusiastic in testing.
What's next: Apple Watch complication, widgets, and a flight log.