Comparison

24h World Clock vs Circa³

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

24h World Clock

This app provides a unique 24-hour analog clock face to display multiple time zones simultaneously. It offers comprehensive time zone management, personalization options, and detailed information for each zone, all presented with an elegant dark interface.

Highlights
  • Unique 24-hour analog clock face
  • Simultaneous display of multiple time zones
  • Comprehensive time zone database
  • Customizable time zone labels
  • Interactive world map view
  • DST status indicators
  • Personalization options
Features
Read full description

World Clock is the ultimate 24-hour analog clock for tracking time across the globe — all on one beautifully designed clock face. Whether you work with international teams, have family abroad, or simply love knowing what time it is around the world, this app gives you a clear, elegant view of multiple time zones at a glance. UNIQUE 24-HOUR CLOCK FACE • A single analog clock displays all your time zones simultaneously • Each time zone is represented by its own labeled arm on the clock face • A rotating globe background brings the world to your wrist — and your screen COMPLETE TIME ZONE MANAGEMENT • Browse and search a comprehensive worldwide database of cities and countries • Add time zones manually, or choose from predefined collections • Group and organize time zones by UTC offset with color-coded indicators PREDEFINED COLLECTIONS Get started instantly with ready-made sets: • Popular — major global cities from Los Angeles to Sydney • US Major Cities — Eastern, Central, Mountain, and Pacific • European Capitals — London, Paris, Athens, Moscow • Asian Capitals — Dubai, Kolkata, Bangkok, Shanghai, Tokyo • Pacific & Oceania — Honolulu, Sydney, Auckland • All Time Zones (Cities) — 24 representative cities worldwide • All UTC — pure UTC offsets from -12 to +12 • Military (NATO) — Alpha through Zulu phonetic designations PERSONALIZATION • Rename any time zone with a custom label — show "Office", "Mom", or "HQ" instead of city names • Show or hide clock hands: seconds, minutes, hours — or display only time zone arms • Flip the clock 180° for a unique perspective • Sort time zones by name, UTC offset, or continent • Filter by continent for quick access DETAILED TIME ZONE INFO • View city, country, continent, UTC offset, and localized name for each zone • See the location on an interactive world map • DST status displayed with clear visual indicators DESIGNED FOR iPHONE AND iPAD • Adapts to all screen sizes • Tap to show or hide controls for an uncluttered clock view • Smooth animations and a polished dark interface All your settings, custom names, and time zones are saved automatically.

About

Circa³

Easily manage time across different locations and time zones. Find optimal meeting times and generate invitations that suit everyone's schedule. This tool helps synchronize teams working in various parts of the world.

Highlights
  • Compare time across multiple locations
  • View working hour overlaps
  • Integrate calendars
  • Organize personally
  • Create one-touch meeting invitations
Features
Read full description

Circa helps you keep time across multiple locations and time zones. Find the best times to connect and quickly create meeting invitations that work for everyone. Circa keeps teams in sync across multiple locations. Features: - Visually compare time across multiple locations - Quickly see working hour overlaps - Connect your calendars to check your schedule - Personal, organize in your own way - Create one-touch meeting invitations Featured: *** Best apps for tech-savvy travelers *** "10 of the best travel apps ... that you'll actually use." - The Guardian "This App Makes It Easy To Collaborate Across The Globe." - FASTCOMPANY

Screenshots

24h World Clock4 screens
Circa³4 screens

Verdict

The call

The clearest difference is update cadence: Circa³ at monthly against 24h World Clock's every 31 months. Circa³ also leads on device support (4 vs 2) and iOS requirement (11.0 vs 18.0). 24h World Clock's advantage is price ($0.99 vs $3.99) and review sentiment (75% vs 63%). On ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

24h World Clock costs $0.99 and Circa³ $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

24h World Clock ships an update every 31 months, Circa³ monthly. Both last shipped on October 17, 2026.

Scorecard6 real differences · 4 level
24h World Clock versus Circa³: the parameters behind the verdict, then further details
Parameter24h World ClockCirca³
Price$0.99 — better$3.99
Rating—4.5 (381 ratings) — better
Positive reviews75.0% of reviews — better63.4% of reviews
Number of ratings—381 — better
Update frequencyEvery 31 monthsMonthly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPadiPhone, iPad, iPod, Apple Watch — better
Requires iOS18.011.0 — better
Further details — not scored
Size13 MB39 MB
Age rating4+4+
DeveloperMate MullerKostiantyn Zuiev

Customer experience

24h World Clock

Written reviews4 reviews
Positive75.0%
Neutral0.0%
Negative25.0%

Circa³

All ratings381 ratings
Positive87.7%
Neutral3.9%
Negative8.4%
Written reviews134 reviews
Positive63.4%
Neutral9.7%
Negative26.9%

In-app purchases

None

24h World Clock

No in-app purchases

None

Circa³

No in-app purchases

Questions

Is 24h World Clock free?
24h World Clock costs $0.99, with no in-app purchases.
Is Circa³ free?
Circa³ costs $3.99, with no in-app purchases.
Do 24h World Clock or Circa³ have ads?
Neither 24h World Clock nor Circa³ shows ads.
Which is updated more often, 24h World Clock or Circa³?
24h World Clock ships an update every 31 months, and Circa³ monthly. Most recently, 24h World Clock was updated on October 17, 2026 and Circa³ on October 17, 2026.

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