Comparison

World Cal vs MilliLife

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

Head to head
About

World Cal

Easily schedule global meetings and events across different time zones. This app helps you find the perfect time for international calls and trips by comparing multiple time zones and integrating with your calendar.

Highlights
  • Cross-timezone scheduling
  • View calendar in multiple timezones
  • Time travel into the future
  • Add unlimited timezones
  • Day/night indicators
  • Home screen and watch widgets
  • DST accuracy
Features
Read full description

Coordinate global meetings, calls, and events without the timezone math. Standard world clocks only tell you what time it is right now. World Calendar goes further: it’s a powerful timezone converter and international meeting planner that lets you look into the future to find the perfect time for everyone. Whether you are scheduling a global team sync, planning an international trip, or calling family overseas, World Calendar integrates directly with your iOS Calendar to make cross-timezone scheduling effortless. CROSS-TIMEZONE SCHEDULING Compare multiple timezones side-by-side to instantly pinpoint the ideal meeting time. Tap anywhere to set a target time, and tap twice to seamlessly create an event directly in your calendar. VIEW YOUR CALENDAR IN MULTIPLE TIMEZONES World Calendar displays your existing events across all your selected timezones. Create, edit, and share events with a single tap, ensuring your global schedule is always perfectly aligned. KEY FEATURES: • Time Travel: Scroll into the future to plan days, weeks, or months ahead. • No Limits: Add and compare as many timezones as you need. • Day/Night Indicators: Instantly see if your contact is awake or asleep. • Home Screen Widget: Check your favorite timezones at a glance without unlocking your device. • Watch Widget and App: Put your recently selected timezones on your wrist • Easy Search: Find locations by city name, timezone abbreviation (e.g., EST, GMT), or UTC offset. • Global Sharing: Send event invites to other users that automatically adapt to their local timezone. • DST Accuracy: Fully automatic adjustments for daylight saving time changes globally. • Nautical Time Zones: Full support for standard UTC offsets without DST adjustments. • Landscape View: Turn your device for a wider, comprehensive timeline view.

About

MilliLife

This app transforms how you perceive time by tracking your age in milliseconds and displaying it in a unique "year time" format. Set goals, manage countdowns, and customize themes to make every moment meaningful.

Highlights
  • Live age tracking in milliseconds
  • Customizable circle goals
  • Unlimited countdown management
  • Full theme customization
  • Age skip for past/future dates
  • Smart home screen widgets
  • Zero data collection for privacy
Features
Read full description

Experience time like never before with MilliLife – the ultimate precision age tracker that transforms how you perceive every moment. MilliLife converts your existence into "year time," where every millisecond becomes meaningful. Whether you're studying, setting goals, or simply contemplating life's fleeting nature, this app turns time awareness into an art form. Key Features: - Live Age Tracking: Watch your life unfold in real-time with ultra-precise calculations down to the millisecond, displayed in an elegant year-time format. - Dashboard & Navigation: A completely revamped interface with intuitive navigation puts all your time data at your fingertips. - Circle Goals: Set custom completion ages and watch your progress arc toward meaningful milestones – perfect for academic goals, career targets, or personal achievements. - Multiple Countdowns: Create, name, and manage unlimited countdowns for everything from study sessions to life events. View and organize past countdowns to track your journey. - Full Theme Customization: Express yourself with comprehensive color themes and background modes (Dark, Light, and signature MilliLife mode) that adapt across the entire app. - Age Skip: Explore your past and future – discover exactly how old you were on any date or will be at any point in time. - Smart Widgets: Keep time awareness alive on your home screen with live age updates and rotating motivational quotes that inspire reflection. - Docked View: Full-screen time display with dynamic backgrounds, perfect for keeping your device docked while staying time-conscious. - Zero Data Collection: Your temporal journey stays private – we track time, not you. Perfect For: Students managing study goals and academic milestones Anyone interested in data visualization and personal analytics Philosophy and existential reflection enthusiasts People setting and tracking long-term life goals Those who want to make every moment count Transform procrastination into motivation and make time your ally with MilliLife.

Screenshots

World Cal4 screens
MilliLife4 screens

Verdict

The call

The clearest difference is ads: MilliLife at none against World Cal's shown. MilliLife also leads on review sentiment (100% vs 76%). World Cal's advantage is rating (4.9 vs 4.4) and ratings volume (318 vs 7). On price, update cadence, in-app purchases and monetization model 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

Both are free to download. World Cal sells 1 one-off in-app purchase and MilliLife sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

World Cal holds the better App Store score, 4.9 against 4.4. That said, the two scores are not equally well evidenced: World Cal has 318 ratings behind it against 7, so its average is the more settled of the two. Written reviews complicate that: 76% of World Cal's written reviews are positive against 100% of MilliLife's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

World Cal ships an update every 4 months, MilliLife every 3 months. The most recent releases landed on November 11, 2026 and November 3, 2026 respectively.

Scorecard5 real differences · 5 level
World Cal versus MilliLife: the parameters behind the verdict, then further details
ParameterWorld CalMilliLife
PriceFreeFree
Rating4.9 (318 ratings) — better4.4 (7 ratings)
Positive reviews76.5% of reviews100.0% of reviews — better
Number of ratings318 — better7
Update frequencyEvery 4 monthsEvery 3 months — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, Mac, Apple Watch — betteriPhone
Requires iOS16.6 — better17.0
Further details — not scored
Size21 MB1 MB
Age rating4+12+
DeveloperGeospike Pty LtdSteve Angulo

Customer experience

World Cal

All ratings315 ratings
Positive98.7%
Neutral0.6%
Negative0.6%
Written reviews51 reviews
Positive76.5%
Neutral9.8%
Negative13.7%

MilliLife

All ratings7 ratings
Positive85.7%
Neutral0.0%
Negative14.3%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

World Cal

Reported bugs

7 issues
  • 🐛 Inappropriate ads in free version
  • 🐛 Widget settings not saved
  • 🐛 Cannot add new events with double tap
  • 🐛 Timezone abbreviations not displayed
  • 🐛 Search feature doesn't work
Show 2 more
  • 🐛 Crashes when adding a city
  • 🐛 Widget expansion settings not saved

Requested features

5 requests
  • Add more cities
  • Option to freeze time zones for comparison
  • Switch between 24-hour and AM/PM clock
  • Cleaner design with better calendar event integration
  • Ability to pick a specific date to view

MilliLife

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

World Cal

One-time1
  • Remove Advertising$19.95
4 purchases

MilliLife

One-time4
  • Question Reality$1.99
  • Existential Updates$4.99
  • Cosmic Joke$9.99
Show 1 more
  • Timeless Code$19.99

Questions

Is World Cal free?
World Cal is free to download, with in-app purchases available.
Is MilliLife free?
MilliLife is free to download, with in-app purchases available.
Which has better reviews, World Cal or MilliLife?
World Cal is rated higher. World Cal averages 4.9 out of 5 from 318 ratings, while MilliLife averages 4.4 from 7 ratings.
Do World Cal or MilliLife have ads?
World Cal shows ads; MilliLife does not.
Which is updated more often, World Cal or MilliLife?
World Cal ships an update every 4 months, and MilliLife every 3 months. Most recently, World Cal was updated on November 11, 2026 and MilliLife on November 3, 2026.

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