Comparison

LunaSolCal vs World Time Clock Master

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

Head to head
About

LunaSolCal

This app calculates precise times for sun and moon events, including sunrise, sunset, moonrise, and moonset, for any location and date. It also provides detailed astronomical data and tracks celestial movements. View daily information in the notification center.

Highlights
  • Sunrise and sunset times
  • Moonrise and moonset times
  • Day length calculation
  • Moon phase tracking
  • Twilight times (civil, nautical, astronomical)
  • Solar and lunar eclipse dates
  • Location-based calculations via GPS or city database
Read full description

Calculate times of sunrise, sunset, moonrise, moonset and more for your location at any given date. The following data is calculated: - Sunrise - Solar noon - Sunset - Day length - Equation of time - Declination - Civil twilight (Dawn/Dusk) - Nautical twilight (Dawn/Dusk) - Astronomical twilight (Dawn/Dusk) - Azimuth at sunrise and sunset - Altitude during solar noon - Sun track - Date and time of Seasons (Spring, Summer, Fall, Winter) - Solstice and Equinox dates - Date and time of next solar eclipse - Moonrise - Moon transit - Moonset - Moon phase - Distance - Declination - Date and time of next new moon - Date and time of next full moon - Azimuth at moonrise and moonset - Altitude during moon transit - Moon track - Date and time of next lunar eclipse Some information for the current day can also be viewed in the notification center. To specify the location of interest either get the position from the built-in GPS or Wifi receiver or select a city from a database with over 400,000 cities in over 200 countries.

About

World Time Clock Master

Effortlessly manage multiple time zones with this app. Convert times instantly, schedule events, and view global clocks at a glance with interactive widgets. Features atomic accuracy and a vast database of locations.

Highlights
  • Multiple time zone display
  • Interactive time conversion
  • Event scheduling
  • Atomic time accuracy
  • Dynamic home screen widgets
  • List mode for text view
  • Real moon phases and sunrise/sunset
Features
Read full description

THE EASIEST WAY TO DEAL WITH MULTIPLE TIMEZONES + INTERACTIVE WIDGETS Sick of screwing up meeting times and missing calls? This app cuts through time-zone confusion and hands you the perfect hour at a glance. Forget guesswork — just click, connect, and impress. KEY FEATURES EVENT SCHEDULING MADE EASY Found the perfect meeting time? Add events to your calendar with just a tap, and never miss an international webinar, call, or special moment again. ATOMIC ACCURACY No drift, no guesswork. Each second syncs with the atomic standard, so you can trust every moment. Extensive Time Zone Database: Tap into over 160,000 locations and time zones including GMT, UTC, and more. UNIFIED CLOCK FACE View all your essential time zones at a glance on one beautifully designed, customizable clock face. Whether you prefer digital or analog displays (or even military time), everything is exactly where you need it. INTERACTIVE TIME CONVERSION Convert times instantly by simply twisting or swiping across the clock face. Watch as your selected time zones update in real time—making planning international calls, meetings, or travel effortless. DYNAMIC WIDGETS Access global times without even opening the app. Our interactive home screen widget lets you drag a simple line to reveal and convert times, ensuring you’re always in sync no matter where you are. LIST MODE Get a clean, text-based view of all your cities in one column. See times and dates at a glance, and scroll to check future or past hours. It’s a no-fuss way to track the world’s clocks. FEELS LIKE A LUXURY TIMEPIECE We poured effort into details most people never notice — and we’re okay with that. Our users aren’t “most people.” Details include: — Real Moon Phases — Real Moon Rotation — Real Sunrise & Sunset — Advanced City Lights — Haptic Feedback * * * World Clock Master offers a premium subscription: Subscribe to get access to unlimited timezones, interactive widgets, customizations, and timely automatic updates of our timezone database of more than 160,000 locations and timezones. – Length of subscription: 1 month or 1 year – Payment will be charged to iTunes Account at confirmation of purchase – Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period – Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal – Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase – Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable – Terms & Conditions: https://timemaster.s3.amazonaws.com/Time-master-terms.pdf

Screenshots

LunaSolCal4 screens
World Time Clock Master4 screens

Verdict

The call

The clearest difference is price: World Time Clock Master at Free against LunaSolCal's $4.99. World Time Clock Master also leads on update cadence (fortnightly vs every 2 months). LunaSolCal's advantage is in-app purchases (none vs 13) and review sentiment (95% vs 66%). On ratings volume, ads and device support 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

World Time Clock Master is free to download; LunaSolCal costs $4.99 up front. World Time Clock Master sells 10 in-app purchases, starting at $2.99 per month. LunaSolCal asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

LunaSolCal holds the better App Store score, 4.9 against 4.6. Both are backed by a comparable volume of ratings — 1.2K and 816 respectively. Written reviews point the same way: 95% of LunaSolCal's written reviews are positive against 66% of World Time Clock Master's.

UpkeepUpdate frequency

LunaSolCal ships an update every 2 months, World Time Clock Master fortnightly. The most recent releases landed on October 18, 2026 and October 17, 2026 respectively.

Scorecard7 real differences · 3 level
LunaSolCal versus World Time Clock Master: the parameters behind the verdict, then further details
ParameterLunaSolCalWorld Time Clock Master
Price$4.99Free — better
Rating4.9 (1.2K ratings) — better4.6 (816 ratings)
Positive reviews95.5% of reviews — better65.8% of reviews
Number of ratings1.2K — better816
Update frequencyEvery 2 monthsFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterSubscription
DevicesiPhone, iPad, iPodiPhone, iPad, Vision Pro
Requires iOS12.0 — better17.0
Further details — not scored
Size79 MB236 MB
Age rating4+4+
DeveloperVolker Voecking Software EngineeringAlex Komarov Inc.

Customer experience

LunaSolCal

All ratings1,176 ratings
Positive98.8%
Neutral0.8%
Negative0.4%
Written reviews264 reviews
Positive95.5%
Neutral1.9%
Negative2.7%

World Time Clock Master

All ratings816 ratings
Positive90.8%
Neutral2.8%
Negative6.4%
Written reviews76 reviews
Positive65.8%
Neutral5.3%
Negative28.9%

User reviews

LunaSolCal

From 1.2K App Store ratings

What we love

  • 👍 Great app
  • 🚀 Accurate and reliable information
  • 💡 Useful for photography and planning
  • 👍 Easy to use and navigate
  • 👍 Comprehensive data and features

Room to improve

  • 🐛 Notifications/alarms not working consistently
  • 🐛 Occasional crashes or bugs
  • 🔧 Place/location selection could be improved

World Time Clock Master

From 816 App Store ratings

What we love

  • 🚀 Delightful scheduling assistance
  • 👍 Feature improvement
  • 👍 The best Timezone helper
  • 👍 One of the best clocks around
  • 👍 The Widget is so damn cool!

Room to improve

  • 🐛 Problemas al actualizar
  • 🐛 Sticky signup interface
  • 🐛 Demo not enough
  • 🔒 NOT A FREE APP
  • 💰 Terrible monetisation model compared to previous app

Bugs and requests

LunaSolCal

Reported bugs

2 issues
  • Notifications not working properly
  • Crashes when using map layer select

Requested features

3 requests
  • Add lockscreen widget
  • Implement automatic light/dark mode switching
  • Integrate with calendar for event planning

World Time Clock Master

Reported bugs

4 issues
  • Lose all the registered locations after updating the app
  • Sticky signup interface
  • Widget doesn't work
  • GMT and London currently have a 1 hour time difference between the two locations, but the app shows them the same time

Requested features

4 requests
  • Add the time difference in hours between the default location and other locations in both the widget and the app
  • See my calendar events on the dial
  • Make a paid tier that doesn't collect my data
  • Add new event to a Calendar

In-app purchases

None

LunaSolCal

No in-app purchases

10 purchases

World Time Clock Master

Subscriptions6
  • 1 month3 variants$2.991 Month
  • 3 months$3.993 Months
  • 1 year1 Year trial2 variants$11.991 Year
Show 3 more
  • 1 year3 Days trial$11.991 Year
  • 1 year$11.991 Year
  • 1 year3 Days trial$19.991 Year
One-time4
  • Lifetime$29.99
  • Lifetime$49.99
  • Lifetime$79.99
Show 1 more
  • Lifetime$99.99

Questions

Is LunaSolCal free?
LunaSolCal costs $4.99, with no in-app purchases.
Is World Time Clock Master free?
World Time Clock Master is free to download, with in-app purchases available.
Which has better reviews, LunaSolCal or World Time Clock Master?
LunaSolCal is rated higher. LunaSolCal averages 4.9 out of 5 from 1.2K ratings, while World Time Clock Master averages 4.6 from 816 ratings.
Do LunaSolCal or World Time Clock Master have ads?
Neither LunaSolCal nor World Time Clock Master shows ads.
Which is updated more often, LunaSolCal or World Time Clock Master?
LunaSolCal ships an update every 2 months, and World Time Clock Master fortnightly. Most recently, LunaSolCal was updated on October 18, 2026 and World Time Clock Master on October 17, 2026.

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