How AvClock Started: A World Clock Built Around Airports, Not Cities
Most world clock apps are built around cities: pick "London," pick "Tokyo," see the offset. That works fine until you actually need to know something specific about a place a flight goes through — and "what time is it in London" quietly stops being the same question as "what time is it at Heathrow, and what's the weather doing there right now."
AvClock started from that second question instead of the first.
The unit is the airport, not the city
From the very first build, every row in AvClock is a real airport, identified by its actual ICAO or IATA code — not a city name with a time zone attached to it. That sounds like a small distinction until you're tracking somewhere like Chicago, which has two major airports on two sides of the same city, or trying to find a specific regional field that a generic clock app has never heard of. AvClock's search reaches every airport worldwide, not a curated shortlist of capitals.
LOCAL and Zulu, pinned from day one
Aviation runs on Zulu time (UTC) specifically to avoid the exact confusion city-based clocks create — a time that means one thing everywhere, instead of something different in every zone. AvClock pins a LOCAL row (your own current time) and a Zulu row right alongside your saved airports from the very first release, so the conversion is always sitting right there, not a separate calculation.
What launched with it
The free tier shipped complete, not a trial: your own list of airports, pinned LOCAL/Zulu rows, and a genuinely global search — no account, no ads, and nothing held back to upsell later.
Premium launched as a single one-time unlock rather than a subscription, adding the features that separate a casual glance from the real thing: live METAR aviation weather with color-coded VFR/MVFR/IFR/LIFR flight categories, Home Screen and Lock Screen widgets, Live Activities that keep an airport's status live on your Lock Screen and in the Dynamic Island, and a set of aviation-livery color themes.
The whole point was a fast, glanceable tool that treats aviation weather and airport identity as first-class — not a city clock with an aviation skin painted over it.
AvClock is reference and informational only, not for actual flight planning or navigation — always use official sources (FAA, NOTAMs, charts, ATC) for that.