World Clock Master
World Clock Master (Alex Komarov Inc.) builds iOS and macOS world clock apps, plus web tools, that synchronize 160,000 global locations via NTP for international scheduling, aviation, military, and HAM radio users.
- Company typePrivate
- Founded-
- Headquarters—
- Headcount1–10
- GTM typeB2C
- OfferingSoftware
What World Clock Master does
World Clock Master, operated by Alex Komarov Inc., is a private US-based developer of world clock and time-zone management software for global scheduling. The company operates a three-product suite: World Clock Master (iOS) for international scheduling with a 24-hour dial, interactive home-screen widgets, and a meeting scheduler; World Clock Pro (macOS), a menu-bar world clock and time-zone converter; and Zulu Time (iOS), a precision UTC clock with NTP atomic clock synchronization, NATO time zone letters, and an interactive world map targeted at pilots, military personnel, and HAM radio operators. Two web-based tools, a Time Zone Converter and a Meeting Planner, are available at worldclock.pro.
The core technology is the IANA time-zone database combined with NTP atomic clock server synchronization, supporting live DST-aware calculations across 160,000 locations and 50+ time zones with second-by-second updates and sub-100ms UI refresh. The company publishes Schema.org JSON-LD structured data on its converter pages to enable machine-readable integration with AI assistants, and has announced a developer-tools roadmap including MCP Server, Claude Skills, and OpenClaw Skills for programmatic access.
The business model is freemium product-led growth through Apple's App Store (iOS and macOS) plus direct website downloads. Pricing is tiered at $2.99/month, $9.99/year, or a $29.99 one-time lifetime purchase. Customer segments span international teams and remote professionals (primary), pilots and aviation, military personnel, HAM radio operators, and frequent travelers (secondary). The company maintains organic social presence on X, Telegram, and Facebook, plus an email newsletter for mid-funnel engagement. No funding rounds, acquisitions, or external partnerships are disclosed; the operation runs on a small (1-10) employee base.
World Clock Master firmographics
Firmographics- Name
- World Clock Master
- Legal name
- Alex Komarov Inc.
- Website
- https://worldclock.pro
- Company type
- Private
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Short description
- World Clock Master (Alex Komarov Inc.) builds iOS and macOS world clock apps, plus web tools, that synchronize 160,000 global locations via NTP for international scheduling, aviation, military, and HAM radio users.
- Ownership category
- akta.pro rank
World Clock Master industry classification
Industry- Product category
- World Clock and Time Zone Management Software
- akta.pro primary industry
- Email, Calendar & Scheduling (BPAMAMAC)
Keywords
World Clock Master business model
Business model- GTM type
- B2C
- Offering type
- Software
- Cost components
- Personnel, Technology or R&D, Marketing or Sales, Operations, Infrastructure
Revenue model
- Subscription Revenue: Premium subscription providing unlimited timezones, customizations, and automatic timezone database updates. Length options include 1-month and 1-year terms with auto-renewal.
- Lifetime Purchase: One-time lifetime purchase option for permanent access without recurring fees.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Subscription | Monthly | Monthly subscription for premium features |
| Subscription | Annual | Annual subscription with discount vs monthly |
| One time/ perpetual license | Pay-as-you-go | One-time lifetime purchase |
Go-to-market motion1 record
Distribution channels3 records
Marketing channels4 records
World Clock Master product offering
Product offeringCore offering
World Clock Master builds and sells a suite of multi-platform time zone apps — World Clock Master (iOS), World Clock Pro (macOS menu bar), and Zulu Time (iOS precision UTC clock) — supported by free web tools (Time Zone Converter and Meeting Planner). The offerings rely on an IANA-based 160,000-location database with NTP-synchronized atomic clock accuracy, DST-aware live updates every second, and a meeting scheduler that calculates optimal cross-zone meeting times.
Product overview
World Clock Master operates a suite of three core products across iOS, macOS, and web platforms: World Clock Master (iOS app for international scheduling with widgets and meeting scheduling), World Clock Pro (macOS menu bar application for time zone conversion), and Zulu Time (iOS precision UTC clock for aviation and military use). Additionally, free web-based tools include a time zone converter and meeting planner accessible at worldclock.pro. The company also offers a World Clock + Zulu Time Bundle for combined access.
Differentiator
Problem solved
Functional benefit
Products and services
- World Clock Master (iOS app) World clock app for iPhone and iPad built for international scheduling, featuring a 24-hour dial, interactive home-screen widgets, and a meeting scheduler that handles cross-zone time coordination. Targets international professionals, remote workers, and global teams.
- World Clock Pro (macOS menu bar app) Menu bar world clock and time-zone converter for macOS that displays multiple cities and converts meeting times instantly. Targets macOS users working across time zones who want glanceable time references while working.
- Zulu Time (iOS app) Precision UTC clock for pilots, military personnel, and HAM radio operators, with NTP-synced atomic clock accuracy, NATO time-zone letters, and an interactive world map. Targets aviation, defense, and amateur radio professionals who require Zulu/UTC time standardization.
- Time Zone Converter (web tool) Web-based time zone converter that compares time between any two locations with live updates and DST awareness, available free at worldclock.pro. Targets web visitors comparing times between cities without installing an app.
- Meeting Planner (web tool) Web-based meeting planner that identifies optimal meeting times across different time zones by overlapping business hours, available free at worldclock.pro. Targets distributed teams planning cross-border meetings without installing an app.
Quantifiable outcome
- UI refresh under 100ms for responsive user experience
- +1 more outcomes
Companies that use World Clock Master
Customer profileSegments5 records
Ideal customer profiles5 records
World Clock Master technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature5 records
World Clock Master partnerships and signals
Strategic signalScale indicators2 records
Recent moves5 records
Expansion highlights4 records
World Clock Master competitors and assessment
Company assessmentDirect peers
- Fantastical: Premium cross-platform calendar app with strong timezone, meeting, and natural-language scheduling features. Direct premium-app competitor on iOS and macOS for the international scheduling persona.
- World Time Buddy: A focused visual time zone comparison and meeting-scheduling tool popular with remote teams. Directly competes with World Clock Master's meeting planner and multi-zone comparison features.
- Calendly: Scheduling platform with timezone detection and meeting-time finder. Competes with the Meeting Planner product and represents the broader shift from standalone clock tools to integrated scheduling workflows.
- World Time Zone (worldtimezone.com): Long-running reference site for global time zones, DST rules, and aviation/military zone letters. Closest direct competitor in the Zulu Time / NATO-zone niche.
- timeanddate.com: The dominant web destination for world clocks, time zone converters, and meeting planners covering thousands of cities. Closest direct competitor on the web tool side and on the 160,000-city global timezone coverage angle.
- Every Time Zone: A minimalist multi-zone time comparison web app. Targets the same remote-team scheduling use case with a different visual metaphor and a free, ad-supported model.
Broad incumbents
- Microsoft Outlook: Enterprise calendar and email platform with native multi-timezone support and meeting scheduling. Competes indirectly as a free, deeply embedded alternative for professional scheduling.
- Google Calendar: Free, ubiquitous calendar with multi-timezone event creation and world clock features built in. Represents the free-incumbent threat that compresses paid standalone-clock monetization.
Emerging players
- Clockify: Time tracking and scheduling platform with timezone-aware features. Overlaps on the scheduling and time-awareness axis for distributed teams, though framed around work-hours tracking rather than world clocking.
- The World Clock (PiliApp): Web-based world clock and meeting time comparator covering major cities. Comparable emerging web tool targeting overlapping consumer and SMB personas.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks6 records
Key highlights6 records
Customer concentration
World Clock Master social profiles
Digital presenceWorld Clock Master financial estimates
Financial estimateRevenue estimate
Valuation estimate
World Clock Master leadership team
Management profileNumber of profiles
World Clock Master funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
World Clock Master M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about World Clock Master
What does World Clock Master do?
World Clock Master builds and sells a suite of multi-platform time zone apps — World Clock Master (iOS), World Clock Pro (macOS menu bar), and Zulu Time (iOS precision UTC clock) — supported by free web tools (Time Zone Converter and Meeting Planner). The offerings rely on an IANA-based 160,000-location database with NTP-synchronized atomic clock accuracy, DST-aware live updates every second, and a meeting scheduler that calculates optimal cross-zone meeting times.
Is World Clock Master a public or private company?
World Clock Master is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was World Clock Master founded?
World Clock Master was founded in -1. It employs 1 to 10 people.
How does World Clock Master make money?
Two revenue lines are on record. Subscription Revenue is the primary driver. The others are lifetime Purchase.
Who are World Clock Master's main competitors?
Direct peers on record are Fantastical, World Time Buddy, Calendly, World Time Zone (worldtimezone.com), timeanddate.com and Every Time Zone. Broad incumbents are Microsoft Outlook and Google Calendar. Emerging players are Clockify and The World Clock (PiliApp).
Does World Clock Master have an API?
No public API is recorded for World Clock Master.
What industry is World Clock Master in?
World Clock Master's product category is World Clock and Time Zone Management Software. Its primary akta.pro industry code is BPAMAMAC, Email, Calendar & Scheduling.