Horzono World Clock & Daylight

Know when to call anyone, anywhere — without doing time-zone math.

Add the people you work with and the people you love. Horzono shows the time where each of them is, and whether it's day or night there, so you can see at a glance who's starting their morning, who's wrapping up work and who's asleep.

Planning a call? Drag the time slider and every clock moves together. Find the hour that works for the whole team before you send the invite. Your calendar sits right beside them, with a Join button for your next call.

Type a city, not a time zone. Horzono knows more than 25,000 cities, works completely offline, and runs on iPhone, iPad, iPhone Duo, the Mac menu bar and Apple Vision Pro — with widgets on each. No ads. No tracking. No subscription.

FEATURES
• Day or night at a glance — for every person you track
• Time slider — scrub up to 24 hours forward or back across everyone at once
• Type a city, get its time — no country or time zone to know
• Widgets — on your Home Screen, Lock Screen and Mac desktop
• Your calendar beside your people, with a busy-day heat map and one-tap Join
• Group by time zone — everyone in the same zone in one row, labeled CET, EST and so on
• Reference point — compare everyone against one person you choose, or UTC
• Make it personal — a name, an emoji, a photo or a contact for each person, and several people on one city
• 12- or 24-hour clock, or follow the system
• Made for iPad and iPhone Duo — your calendar on one side, your people on the other
• Mac menu bar app with a global hotkey and a join-call shortcut
• MCP server on Mac — let AI assistants read your people's local time and plan a meeting across them
• iCloud sync — your people and settings on all your devices

HORZONO PLUS
One in-app purchase — no subscription, ever. Plus unlocks iCloud sync, the reference point and UTC, the time slider, calendar events and the busy-day heat map, time-zone grouping, attached people, customization, and — on Mac — the global hotkey, join-call and the MCP server.

PRIVATE BY DESIGN
Horzono has no ads, never tracks you, and keeps your data on your devices.

Questions or ideas? We'd love to hear from you at micropixels.software/horzono.