The short version: Every Time Zone is a free, web-based visual timeline. You add cities, read the overlap by eye, and grab instant iCal links from any browser. Atlas is a $9.99 native macOS menu-bar app that goes one step further: it recommends the best overlapping time and books it in everyone's correct local time, privately, with no account.
These two tools answer the same question, "when can we all meet?", but they stop at different points. Every Time Zone shows you the picture. Atlas makes the decision and acts on it. Both are good; the right choice depends on how often you schedule and where you work.
What is Every Time Zone good at?
Every Time Zone (everytimezone.com) is a popular, free web tool with a clean horizontal timeline. You add cities and a slider lets you drag across the day to see where everyone's clocks line up. It is genuinely well made: minimal ads, instant iCal links for a chosen slot, and it works on any operating system because it lives in a browser.
If you only schedule occasionally, or you bounce between a Windows PC, a Mac and a phone, that browser-first design is a real strength. There is nothing to install and nothing to pay. For a quick, visual sanity check of overlap, it is hard to beat.
Where does Atlas go further?
Atlas starts from the same map idea, but it is built to finish the job rather than hand it back to you. It pins teammates and cities with live local times, shades each person's working hours, and then auto-suggests the best overlapping meeting time instead of asking you to spot it yourself. One tap adds the meeting to your calendar in everyone's correct local time, with daylight saving handled for you.
Because it is a native macOS menu-bar app, it is always a keyboard shortcut away. A Quick Check mode pops up the overlap without breaking your flow, and groups let you save a team once and reuse it. Nothing leaves your Mac: there is no account, and your cities and meetings stay local.
How do they compare side by side?
| Dimension | Every Time Zone | Atlas |
|---|---|---|
| Platform | Web, any OS | Native macOS menu-bar app |
| Price | Free | $9.99 once, no subscription |
| Shows overlap | Yes, on a timeline | Yes, on a world map |
| Finds the best time | You read it by eye | Auto-suggests the best slot |
| Adds to calendar | Instant iCal links | One tap, each correct local time |
| Working-hours awareness | Visual, judged by you | Shaded working hours |
| Privacy | Web-based | No account, nothing leaves your Mac |
From showing the overlap to booking it
The clearest difference is the last step. Every Time Zone is brilliant at showing the overlap; you then decide which moment is fairest and create the event. Atlas not only shows the overlap, it recommends the best moment, respecting everyone's hours, and then books it natively in each person's correct local time. That gap, between reading a timeline and one-tap booking, is the whole reason Atlas exists.
Plenty of people start on a free timeline like Every Time Zone, then move to a dedicated app once cross-zone scheduling becomes a weekly habit. If that sounds like you, see how Atlas turns the overlap into a booked meeting.
Which should you choose?
Pick Every Time Zone if you want a free, cross-platform timeline you can open anywhere, schedule only now and then, or do not work primarily on a Mac. It is a genuinely good tool and we are happy to recommend it for that.
Pick Atlas if you are on a Mac and schedule across zones often enough that you want the app to do the thinking: suggest the fairest time, respect working hours, and add the meeting to your calendar in one keyboard-driven tap, all without an account. If you would like a refresher on the underlying ideas first, our guide on how many time zones there really are is a good place to start.
Frequently asked
Is Every Time Zone free?
What does Atlas do that Every Time Zone does not?
Should I use Every Time Zone or Atlas?
Does Atlas keep my data private?
Stop doing timezone math
Atlas finds the time everyone's awake and adds it to your calendar in one tap.
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